P-51 Mustang
Encyclopedia

The North American Aviation P-51 Mustang was an American long-range, single-seat fighter
Fighter aircraft
A fighter aircraft is a military aircraft designed primarily for air-to-air combat with other aircraft, as opposed to a bomber, which is designed primarily to attack ground targets...

 and fighter-bomber
Fighter-bomber
A fighter-bomber is a fixed-wing aircraft with an intended primary role of light tactical bombing and also incorporating certain performance characteristics of a fighter aircraft. This term, although still used, has less significance since the introduction of rockets and guided missiles into aerial...

 used during World War II
World War II
World War II, or the Second World War , was a global conflict lasting from 1939 to 1945, involving most of the world's nations—including all of the great powers—eventually forming two opposing military alliances: the Allies and the Axis...

, the Korean War
Korean War
The Korean War was a conventional war between South Korea, supported by the United Nations, and North Korea, supported by the People's Republic of China , with military material aid from the Soviet Union...

 and in several other conflicts. During World War II Mustang pilots claimed 4,950 enemy aircraft shot down, the most of any Allied fighter.

It was conceived, designed and built by North American Aviation
North American Aviation
North American Aviation was a major US aerospace manufacturer, responsible for a number of historic aircraft, including the T-6 Texan trainer, the P-51 Mustang fighter, the B-25 Mitchell bomber, the F-86 Sabre jet fighter, the X-15 rocket plane, and the XB-70, as well as Apollo Command and Service...

 (NAA), under the direction of lead engineer Edgar Schmued
Edgar Schmued
Edgar Schmued , German-American aircraft designer was famed for his design of the iconic North American P-51 Mustang and, later, the North American F-86 Sabre while at North American Aviation. He later worked on other aircraft designs as an aviation consultant.-Early life:Edgar Schmued was born in...

, in response to a specification issued directly to NAA by the British Purchasing Commission
British Purchasing Commission
The British Purchasing Commission was a United Kingdom organization of the Second World War.Also known at some time as the "Anglo-French Purchasing Board", it was based in New York City, where it arranged the production and purchase of armaments from North American manufacturers.The Board was able...

; the prototype NA-73X airframe was rolled out, although without an engine, 102 days after the contract was signed. The Mustang was originally designed to use a low-altitude rated Allison V-1710 engine, and was first flown operationally by the Royal Air Force
Royal Air Force
The Royal Air Force is the aerial warfare service branch of the British Armed Forces. Formed on 1 April 1918, it is the oldest independent air force in the world...

 (RAF) as a tactical-reconnaissance
Aerial reconnaissance
Aerial reconnaissance is reconnaissance that is conducted using unmanned aerial vehicles or reconnaissance aircraft. Their roles are to collect imagery intelligence, signals intelligence and measurement and signature intelligence...

 aircraft and fighter-bomber
Fighter-bomber
A fighter-bomber is a fixed-wing aircraft with an intended primary role of light tactical bombing and also incorporating certain performance characteristics of a fighter aircraft. This term, although still used, has less significance since the introduction of rockets and guided missiles into aerial...

. The definitive version, the P-51D, was powered by the Packard V-1650-7
Packard V-1650
The Packard V-1650 was a liquid cooled 27 litre 60° V12 piston aircraft engine variant of the Rolls-Royce Merlin produced under licence by the Packard Motor Car Company...

, a licence-built
Licence-built
The term licence-built refers to an object manufactured by one organisation with the authorisation of the organisation that owns the intellectual property of the design...

 version of the Rolls-Royce Merlin 60 series
Rolls-Royce Merlin
The Rolls-Royce Merlin is a British liquid-cooled, V-12, piston aero engine, of 27-litre capacity. Rolls-Royce Limited designed and built the engine which was initially known as the PV-12: the PV-12 became known as the Merlin following the company convention of naming its piston aero engines after...

 two-stage two-speed supercharged
Supercharger
A supercharger is an air compressor used for forced induction of an internal combustion engine.The greater mass flow-rate provides more oxygen to support combustion than would be available in a naturally aspirated engine, which allows more fuel to be burned and more work to be done per cycle,...

 engine, and armed with six .50 caliber
.50 BMG
The .50 Browning Machine Gun or 12.7×99mm NATO is a cartridge developed for the Browning .50 caliber machine gun in the late 1910s. Entering service officially in 1921, the round is based on a greatly scaled-up .30-06 cartridge...

 (12.7 mm) M2 Browning machine guns.

From late 1943, P-51Bs (supplemented by P-51Ds from mid-1944) were used by the USAAF's Eighth Air Force
Eighth Air Force
The Eighth Air Force is a numbered air force of the United States Air Force Global Strike Command . It is headquartered at Barksdale Air Force Base, Louisiana....

 to escort bombers in raids over Germany
Nazi Germany
Nazi Germany , also known as the Third Reich , but officially called German Reich from 1933 to 1943 and Greater German Reich from 26 June 1943 onward, is the name commonly used to refer to the state of Germany from 1933 to 1945, when it was a totalitarian dictatorship ruled by...

, while the RAF's 2 TAF
RAF Second Tactical Air Force
The former RAF Second Tactical Air Force was one of three tactical air forces within the Royal Air Force during and after the Second World War...

 and the USAAF's Ninth Air Force used the Merlin-powered Mustangs as fighter-bombers, roles in which the Mustang helped ensure Allied air superiority in 1944. The P-51 was also in service with Allied
Allies of World War II
The Allies of World War II were the countries that opposed the Axis powers during the Second World War . Former Axis states contributing to the Allied victory are not considered Allied states...

 air forces in the North African, Mediterranean and Italian
Italian Campaign (World War II)
The Italian Campaign of World War II was the name of Allied operations in and around Italy, from 1943 to the end of the war in Europe. Joint Allied Forces Headquarters AFHQ was operationally responsible for all Allied land forces in the Mediterranean theatre, and it planned and commanded the...

 theatres, and saw limited service against the Japanese
Empire of Japan
The Empire of Japan is the name of the state of Japan that existed from the Meiji Restoration on 3 January 1868 to the enactment of the post-World War II Constitution of...

 in the Pacific War
Pacific War
The Pacific War, also sometimes called the Asia-Pacific War refers broadly to the parts of World War II that took place in the Pacific Ocean, its islands, and in East Asia, then called the Far East...

.

At the start of Korean War the Mustang was the main fighter used by the United Nations
United Nations
The United Nations is an international organization whose stated aims are facilitating cooperation in international law, international security, economic development, social progress, human rights, and achievement of world peace...

. Jet fighters, including the F-86, took over this role, and the Mustang became a specialized ground-attack fighter-bomber.

Despite the advent of jet fighters, the Mustang remained in service with some air forces until the early 1980s. After World War II and the Korean War, many Mustangs were converted for civilian use, especially air racing
Air racing
- History :The first ever air race was held in St. Louis, Missouri, in 1908. The participants piloted the only 4 airships in the U.S. around a course located at Forest Park...

.

Genesis

In April 1938, shortly after the German Anschluss
Anschluss
The Anschluss , also known as the ', was the occupation and annexation of Austria into Nazi Germany in 1938....

 of Austria, the British government established a purchasing commission
British Purchasing Commission
The British Purchasing Commission was a United Kingdom organization of the Second World War.Also known at some time as the "Anglo-French Purchasing Board", it was based in New York City, where it arranged the production and purchase of armaments from North American manufacturers.The Board was able...

 in the United States, headed by Sir Henry Self. Self was given overall responsibility for Royal Air Force
Royal Air Force
The Royal Air Force is the aerial warfare service branch of the British Armed Forces. Formed on 1 April 1918, it is the oldest independent air force in the world...

 (RAF) production and research and development, and also served with Sir Wilfrid Freeman
Wilfrid Freeman
Air Chief Marshal Sir Wilfrid Rhodes Freeman, 1st Baronet, GCB, DSO, MC, RAF was one of the most important influences on the rearmament of the Royal Air Force in the years up to and including the Second World War....

, the "Air Member for Development and Production". Self also sat on the British Air Council Sub-committee on Supply (or "Supply Committee") and one of his many tasks was to organize the manufacturing and supply of American fighter aircraft for the RAF. At the time, the choice was very limited as no U.S. aircraft already flying met European standards, with only the Curtiss P-40 Tomahawk coming close. The Curtiss-Wright
Curtiss-Wright
The Curtiss-Wright Corporation was the largest aircraft manufacturer in the United States at the end of World War II, but has evolved to largely become a component manufacturer, specializing in actuators, aircraft controls, valves, and metalworking....

 plant was running at capacity, so even P-40s were in short supply.

North American Aviation
North American Aviation
North American Aviation was a major US aerospace manufacturer, responsible for a number of historic aircraft, including the T-6 Texan trainer, the P-51 Mustang fighter, the B-25 Mitchell bomber, the F-86 Sabre jet fighter, the X-15 rocket plane, and the XB-70, as well as Apollo Command and Service...

 (NAA) was already supplying its Harvard
T-6 Texan
The North American Aviation T-6 Texan was a single-engine advanced trainer aircraft used to train pilots of the United States Army Air Forces, United States Navy, Royal Air Force and other air forces of the British Commonwealth during World War II and into the 1950s...

 trainer to the RAF, but was otherwise underutilized. NAA President "Dutch" Kindelberger
James H. Kindelberger
James H. "Dutch" Kindelberger was an American pioneer of aviation. He was also a leader of North American Aviation for a number of years. The International Aerospace Hall of Fame inducted Kindelberger in 1977....

 approached Self to sell a new medium bomber
Medium bomber
A medium bomber is a bomber aircraft designed to operate with medium bombloads over medium distances; the name serves to distinguish them from the larger heavy bombers and smaller light bombers...

, the B-25 Mitchell
B-25 Mitchell
The North American B-25 Mitchell was an American twin-engined medium bomber manufactured by North American Aviation. It was used by many Allied air forces, in every theater of World War II, as well as many other air forces after the war ended, and saw service across four decades.The B-25 was named...

. Instead, Self asked if NAA could manufacture the Tomahawk under license from Curtiss.

Kindelberger said NAA could have a better aircraft with the same engine in the air in less time than it would take to set up a production line for the P-40. The Commission stipulated armament of four 0.303 in (7.7 mm) machine guns, the Allison V-1710 liquid-cooled engine, a unit cost of no more than $40,000, and delivery of the first production aircraft by January 1941. In March 1940, 320 aircraft were ordered by Sir Wilfred Freeman who had become the executive head of Ministry of Aircraft Production (MAP), and the contract was promulgated on 24 April.

The design, known as the NA-73X, followed the best conventional practice of the era, but included several new features. One was a wing designed using laminar flow
Laminar flow
Laminar flow, sometimes known as streamline flow, occurs when a fluid flows in parallel layers, with no disruption between the layers. At low velocities the fluid tends to flow without lateral mixing, and adjacent layers slide past one another like playing cards. There are no cross currents...

 airfoils developed in a collaboration between NACA
National Advisory Committee for Aeronautics
The National Advisory Committee for Aeronautics was a U.S. federal agency founded on March 3, 1915 to undertake, promote, and institutionalize aeronautical research. On October 1, 1958 the agency was dissolved, and its assets and personnel transferred to the newly created National Aeronautics and...

 and North American Aviation. These airfoils, designated NAA/NACA 45-100, were associated with very low drag at high speeds. During the development of the NA-73X, a wind tunnel test of two wings, one using NACA 5-digit airfoils and the other using the new NAA/NACA 45-100 airfoils, was performed in the University of Washington
University of Washington
University of Washington is a public research university, founded in 1861 in Seattle, Washington, United States. The UW is the largest university in the Northwest and the oldest public university on the West Coast. The university has three campuses, with its largest campus in the University...

 Kirsten Wind Tunnel. The results of this test showed the superiority of the wing designed with the NAA/NACA 45-100 airfoils. The other feature was a new radiator design that exploited the "Meredith Effect
Meredith Effect
The Meredith Effect is a term for the use of the hot air from a radiator to provide thrust for aircraft.The concept was devised by Fredrick Meredith at the Royal Aircraft Establishment , Farnborough, prior to World War II, and incorporated into a radiator-duct design that produced thrust, helping...

", in which heated air exited the radiator as a form of jet thrust. Because NAA lacked a suitable wind tunnel to test this feature, it used the GALCIT 10 ft (3 m) wind tunnel at Caltech. This led to some controversy over whether the Mustang's cooling system aerodynamics
Aerodynamics
Aerodynamics is a branch of dynamics concerned with studying the motion of air, particularly when it interacts with a moving object. Aerodynamics is a subfield of fluid dynamics and gas dynamics, with much theory shared between them. Aerodynamics is often used synonymously with gas dynamics, with...

 were developed by NAA's engineer Edgar Schmued
Edgar Schmued
Edgar Schmued , German-American aircraft designer was famed for his design of the iconic North American P-51 Mustang and, later, the North American F-86 Sabre while at North American Aviation. He later worked on other aircraft designs as an aviation consultant.-Early life:Edgar Schmued was born in...

 or by Curtiss, although NAA had purchased the complete set of P-40 and XP-46
Curtiss XP-46
-References:NotesBibliography* Bowers, Peter M. Curtiss Aircraft, 1907-1947. London: Putnam & Company Ltd., 1979. ISBN 0-370-10029-8.* Green, William. War Planes of the Second World War, Volume Four: Fighters. London: MacDonald & Co. Ltd., 1961 . ISBN 0-356-01448-7.* Green, William and Gordon...

 wind tunnel data and flight test reports for US$
United States dollar
The United States dollar , also referred to as the American dollar, is the official currency of the United States of America. It is divided into 100 smaller units called cents or pennies....

56,000. The NA-73X was also one of the first aircraft to have a fuselage lofted mathematically using conics
Conic section
In mathematics, a conic section is a curve obtained by intersecting a cone with a plane. In analytic geometry, a conic may be defined as a plane algebraic curve of degree 2...

. This resulted in the aircraft's fuselage having smooth, low drag, surfaces.

The prototype NA-73X was rolled out in early August and first flew on 26 October 1940, respectively just 117 and 178 days after the order had been placed, an uncommonly short gestation period. The prototype handled well and the internal arrangement accommodated an impressive fuel load. The aircraft’s two-section, semi-monocoque
Monocoque
Monocoque is a construction technique that supports structural load by using an object's external skin, as opposed to using an internal frame or truss that is then covered with a non-load-bearing skin or coachwork...

 fuselage was constructed entirely of aluminum to save weight. It was armed with four .30 in (7.62 mm) M1919 Browning machine gun
M1919 Browning machine gun
The M1919 Browning is a .30 caliber medium machine gun that was widely used during the 20th century. It was used as a light infantry, coaxial, mounted, aircraft, and anti-aircraft machine gun by the U.S. and many other countries, especially during World War II, the Korean War, and the Vietnam War...

s, two in the wings and two mounted under the engine and firing through the propeller arc using gun synchronizing gear.

While the United States Army Air Corps
United States Army Air Corps
The United States Army Air Corps was a forerunner of the United States Air Force. Renamed from the Air Service on 2 July 1926, it was part of the United States Army and the predecessor of the United States Army Air Forces , established in 1941...

 (USAAC) could block any sales it considered detrimental to the interests of the United States, the NA-73 was considered to be a special case because it had been designed at the instigation of the British. In September 1940 a further 300 NA-73s were ordered by MAP. To ensure uninterrupted delivery Colonel Oliver P. Echols
Oliver P. Echols
Oliver Patton Echols was an American military officer who brought success in World War II to the United States Army Air Forces by expanding the inventory of America's air arm to meet the needs of the coming war. More than any other man under Chief of the Army Air Forces, General Henry H...

 arranged with the Anglo-French Purchasing Commission to deliver the aircraft, and NAA gifted two examples to the USAAC for evaluation.

Prior to the P-51

Pre-war doctrine of most bomber forces was to attack at night when the bombers would be effectively immune to interception. In theory, the loss in accuracy due to limited visibility was a high price to pay, protecting small targets from attack. The RAF did attempt several long-range daylight raids early in the war using the Vickers Wellington
Vickers Wellington
The Vickers Wellington was a British twin-engine, long range medium bomber designed in the mid-1930s at Brooklands in Weybridge, Surrey, by Vickers-Armstrongs' Chief Designer, R. K. Pierson. It was widely used as a night bomber in the early years of the Second World War, before being displaced as a...

, but suffered such high casualties that they gave up the effort very quickly. The Luftwaffe
Luftwaffe
Luftwaffe is a generic German term for an air force. It is also the official name for two of the four historic German air forces, the Wehrmacht air arm founded in 1935 and disbanded in 1946; and the current Bundeswehr air arm founded in 1956....

had the advantage of bases in France that allowed their fighters to escort the bombers at least part way on their missions. Nevertheless, this strategy proved ineffective as the RAF fighters simply ignored the escorts and attacked the bombers. The Germans too gave up on day bombing and switched to night bombing during The Blitz
The Blitz
The Blitz was the sustained strategic bombing of Britain by Nazi Germany between 7 September 1940 and 10 May 1941, during the Second World War. The city of London was bombed by the Luftwaffe for 76 consecutive nights and many towns and cities across the country followed...

 of 1940/41.

American pre-war doctrine developed out of an isolationist policy that was primarily centred on defence. The B-17 had originally been designed to attack shipping at long range from the US shores. For this role it needed to be able to attack in daylight and used the advanced Norden bombsight
Norden bombsight
The Norden bombsight was a tachometric bombsight used by the United States Army Air Forces and the United States Navy during World War II, and the United States Air Force in the Korean and the Vietnam Wars to aid the crew of bomber aircraft in dropping bombs accurately...

 to improve accuracy. As the bomber developed, more and more defensive armament was added to outgun the fighters it would face. In light of this heavy defensive firepower, the USAAC came to believe that tightly packed formations of B-17s would have so much firepower that they could fend off fighters on their own. In spite of evidence to the contrary from the RAF and Luftwaffe, this strategy was believed to be sound, and when the US entered the war they put this strategy into force, building up a strategic bomber force based in Britain.

The 8th Air Force
Eighth Air Force
The Eighth Air Force is a numbered air force of the United States Air Force Global Strike Command . It is headquartered at Barksdale Air Force Base, Louisiana....

 started operations from Britain in August 1942; at first, because of the limited scale of operations, there was no conclusive evidence that the American doctrine was failing. In the 26 operations which had been flown to the end of 1942 the loss rate had been under 2%. In January 1943, at the Casablanca Conference, the Allies formulated the Combined Bomber Offensive
Combined Bomber Offensive
The Combined Bomber Offensive was an Anglo-American offensive of strategic bombing during World War II in Europe. The primary portion of the CBO was against German Air Force targets which was the highest priority from June 1943 to 1944...

 (CBO) plan for "round-the-clock" bombing by the RAF at night and the USAAF by day. In June 1943, the Combined Chiefs of Staff
Combined Chiefs of Staff
The Combined Chiefs of Staff was the supreme military command for the western Allies during World War II. It was a body constituted from the British Chiefs of Staff Committee and the American Joint Chiefs of Staff....

 issued the Pointblank Directive
Pointblank directive
Operation Pointblank was the code name for the primary portion of the Allied Combined Bomber Offensive intended to cripple or destroy the German aircraft fighter strength, thus drawing it away from frontline operations and ensuring it would not be an obstacle to the invasion of Northwest Europe....

 to destroy the Luftwaffe before the invasion of Europe, putting the CBO into full implementation. Following this, the 8th Air Force's heavy-bombers conducted a series of deep-penetration raids into Germany, beyond the range of available escort fighters. German fighter reaction was fierce, and bomber losses were severe—20% in an October 14 attack
Second Raid on Schweinfurt
The second Schweinfurt raid bombed World War II ball bearing factories to reduce production of these vital parts for all manner of war machines. Named Black Thursday because the loss of aircrewmen was the highest for any USAAF mission...

 on the German ball-bearing
Bearing (mechanical)
A bearing is a device to allow constrained relative motion between two or more parts, typically rotation or linear movement. Bearings may be classified broadly according to the motions they allow and according to their principle of operation as well as by the directions of applied loads they can...

 industry. This made it too costly to continue such long-range raids without adequate fighter escort.

The Lockheed
Lockheed Corporation
The Lockheed Corporation was an American aerospace company. Lockheed was founded in 1912 and later merged with Martin Marietta to form Lockheed Martin in 1995.-Origins:...

 P-38 Lightning had the range to escort the bombers, but was only available in very limited numbers in the European theater due to its Allison engines proving difficult to maintain. It was also a very expensive aircraft to build and operate. The Republic
Republic Aviation Company
The Republic Aviation Corporation was an American aircraft manufacturer based in Farmingdale, Long Island, New York. Originally known as the Seversky Aircraft Company, the company was responsible for the design and production of many important military aircraft, including the P-47 Thunderbolt, F-84...

 P-47 Thunderbolt was capable of meeting the Luftwaffe on more than even terms, but did not at the time have sufficient range. The Luftwaffe quickly identified its maximum range, and their fighters waited for the bombers just beyond the point where the Thunderbolts had to turn back.

P-51 introduction

The Mustang changed all that. In general terms, the Mustang was at least as simple as other aircraft of its era. It used a single, well-understood, reliable engine and had internal space for a huge fuel load. With external fuel tanks, it could accompany the bombers all the way to Germany and back. Enough P-51s became available to the 8th and 9th Air Force
Ninth Air Force
The Ninth Air Force is a numbered air force of the United States Air Force's Air Combat Command . It is headquartered at Shaw Air Force Base, South Carolina....

s in the winter of 1943–44. When the Pointblank offensive resumed in early 1944, matters changed dramatically. The P-51 proved perfect for the task of escorting bombers all the way to the deepest targets. The Eighth Air Force immediately began to switch its fighter groups to the Mustang, first exchanging arriving P-47 groups for those of the 9th Air Force using P-51s, then gradually converting its Thunderbolt and Lightning groups. The defence was initially layered, using the shorter range P-38s and P-47s to escort the bombers during the initial stages of the raid, and then handing over to the P-51 when they turned for home. By the end of 1944, 14 of its 15 groups flew the Mustang.

The Luftwaffe initially adapted to the U.S. fighters by modifying their pre-P-51 doctrine, massing in front of the bombers and then attacking in a single pass through the formation. The P-51s, flying in close formation with the bombers, had little time to react before the attackers were already running out of range where they were allowed to pursue. In order to better deal with the bombers, the Luftwaffe started increasing the armament on their fighters with heavy cannons. The weight of this armament decreased performance to the point where their aircraft were sitting ducks if caught by the P-51s. At first this was relatively easy to avoid.

Destroying the Luftwaffe

The U.S. responded with a doctrine change of its own. In early 1944, General James Doolittle
James Doolittle
James Doolittle may refer to:*James Rood Doolittle, U.S. Senator from Wisconsin, 1857–1869*Jimmy Doolittle, U.S. Army general, aviator, and World War II hero...

 told the fighters to stop flying in formation with the bombers, and instead attack the Luftwaffe wherever it could be found. The Mustang groups were sent in before the bombers and could hunt down the German fighters while they were still attempting to form up. The results were astonishing, in a short period of just over a week, the Luftwaffe lost 17% of its fighter pilots. As Doolittle later noted, "Adolf Galland said that the day we took our fighters off the bombers and put them against the German fighters, that is, went from defensive to offensive, Germany lost the air war."

The Luftwaffe answer was the Gefechtsverband (battle formation). It consisted of a Sturmgruppe of heavily armed and armored Fw 190s
Focke-Wulf Fw 190
The Focke-Wulf Fw 190 Würger was a German Second World War single-seat, single-engine fighter aircraft designed by Kurt Tank in the late 1930s. Powered by a radial engine, the 190 had ample power and was able to lift larger loads than its well-known counterpart, the Messerschmitt Bf 109...

 escorted by two Begleitgruppen of light fighters, often Bf 109Gs, whose task was to keep the Mustangs away from the Fw 190s attacking the bombers. This scheme was excellent in theory but difficult to apply in practice. The massive German formation took a long time to assemble and was difficult to maneuver. It was often intercepted by the escorting P-51s and broken before reaching the bombers. But when the Sturmgruppe worked, the effects were devastating. With their engines and cockpits heavily armored, the Fw 190s attacked from astern and gun camera films show that these attacks were often pressed to within 100 yds.

While not always successful in avoiding contact with the escorts, the threat of mass attacks, and later the "company front" (eight abreast) assaults by armored Sturmgruppe Fw 190s, brought an urgency to attacking the Luftwaffe wherever it could be found. Beginning in late February 1944, 8th Air Force fighter units began systematic strafing attacks on German airfields that picked up in frequency and intensity throughout the spring, with the objective of gaining air supremacy over the Normandy
Normandy
Normandy is a geographical region corresponding to the former Duchy of Normandy. It is in France.The continental territory covers 30,627 km² and forms the preponderant part of Normandy and roughly 5% of the territory of France. It is divided for administrative purposes into two régions:...

 battlefield. In general, these were conducted by units returning from escort missions, but beginning in March, many groups also were assigned airfield attacks instead of bomber support. The P-51, particularly with the advent of the K-14 gunsight and the development of "Clobber Colleges" for the in-theater training of fighter pilots in fall 1944, was a decisive element in Allied countermeasures against the Jagdverbände.

The numerical superiority of the USAAF
United States Army Air Forces
The United States Army Air Forces was the military aviation arm of the United States of America during and immediately after World War II, and the direct predecessor of the United States Air Force....

 fighters, superb flying characteristics of the P-51 and pilot proficiency helped cripple the Luftwaffes fighter force. As a result, the fighter threat to US, and later British bombers, was greatly diminished by July 1944. Reichmarshal Hermann Göring
Hermann Göring
Hermann Wilhelm Göring, was a German politician, military leader, and a leading member of the Nazi Party. He was a veteran of World War I as an ace fighter pilot, and a recipient of the coveted Pour le Mérite, also known as "The Blue Max"...

, commander of the German Luftwaffe
Luftwaffe
Luftwaffe is a generic German term for an air force. It is also the official name for two of the four historic German air forces, the Wehrmacht air arm founded in 1935 and disbanded in 1946; and the current Bundeswehr air arm founded in 1956....

during the war, was quoted as saying, "When I saw Mustangs over Berlin, I knew the jig was up."

Mopping up

On 15 April, VIII FC began Operation Jackpot, attacks on specific Luftwaffe fighter airfields. As the efficacy of these missions took effect, the number of fighters at the German airbases fell to the point where they were no longer useful targets, and on 21 May, targets were expanded to include railways, locomotive
Locomotive
A locomotive is a railway vehicle that provides the motive power for a train. The word originates from the Latin loco – "from a place", ablative of locus, "place" + Medieval Latin motivus, "causing motion", and is a shortened form of the term locomotive engine, first used in the early 19th...

s, and rolling stock
Rolling stock
Rolling stock comprises all the vehicles that move on a railway. It usually includes both powered and unpowered vehicles, for example locomotives, railroad cars, coaches and wagons...

 used by the Germans to transport materiel and troops, in missions dubbed "Chattanooga". The P-51 also excelled at this mission, although losses were much higher on strafing missions than in air-to-air combat, partially because, like other fighters using liquid-cooled engines, the Mustang's coolant system could be punctured by small arms hits, even from a single bullet.

Given the overwhelming Allied air superiority, the Luftwaffe put its effort into the development of aircraft of such high performance that they could operate with impunity. Foremost among these were the Messerschmitt Me 163
Messerschmitt Me 163
The Messerschmitt Me 163 Komet, designed by Alexander Lippisch, was a German rocket-powered fighter aircraft. It is the only rocket-powered fighter aircraft ever to have been operational. Its design was revolutionary, and the Me 163 was capable of performance unrivaled at the time. Messerschmitt...

 rocket interceptors and Messerschmitt Me 262
Messerschmitt Me 262
The Messerschmitt Me 262 Schwalbe was the world's first operational jet-powered fighter aircraft. Design work started before World War II began, but engine problems prevented the aircraft from attaining operational status with the Luftwaffe until mid-1944...

 jet fighter. In action, the Me 163 proved to be more dangerous to the Luftwaffe than to the Allies, and was never a serious threat. The Me 262 was, however, but continued operations against their airfields largely nullified their effect.Furthermore the unreliable jet engines of the Me 262s needed careful nursing by their pilots and these aircraft were particularly vulnerable during take-off and landing. Lt. Chuck Yeager
Chuck Yeager
Charles Elwood "Chuck" Yeager is a retired major general in the United States Air Force and noted test pilot. He was the first pilot to travel faster than sound...

 of the 357th Fighter Group
357th Fighter Group
The 357th Fighter Group was an air combat unit of the United States Army Air Forces during the Second World War. The 357th operated P-51 Mustang aircraft as part of the U.S. Eighth Air Force and its members were known unofficially as "The Yoxford Boys" after a village near their base...

 was one of the first American pilots to shoot down a Me 262 which he caught during its landing approach. On 7 October 1944, Lt. Urban Drew of the 365th Fighter Group
365th Fighter Group
The 365th Fighter Group is an inactive United States Army Air Force unit. Its last assignment was with the Army Service Forces stationed at Camp Myles Standish, Massachusetts. It was inactivated on 22 September 1945....

 shot down two Me 262s that were taking off, while on the same day Lt. Col. Hubert Zemke
Hubert Zemke
Colonel Hubert A. "Hub" Zemke was a career officer in the United States Air Force, a fighter pilot in World War II, and a leading USAAF ace...

, who had transferred to the Mustang equipped 479th Fighter Group, shot down what he thought was a Bf 109, only to have his gun camera film reveal that it may have been an Me 262.

The Mustang also proved useful against the V-1s launched toward London
London
London is the capital city of :England and the :United Kingdom, the largest metropolitan area in the United Kingdom, and the largest urban zone in the European Union by most measures. Located on the River Thames, London has been a major settlement for two millennia, its history going back to its...

. P-51B/Cs using 150 octane fuel were fast enough to catch the V-1, and operated in concert with shorter-range aircraft like advanced marks of the Supermarine Spitfire
Supermarine Spitfire
The Supermarine Spitfire is a British single-seat fighter aircraft that was used by the Royal Air Force and many other Allied countries throughout the Second World War. The Spitfire continued to be used as a front line fighter and in secondary roles into the 1950s...

 and Hawker Tempest
Hawker Tempest
The Hawker Tempest was a British fighter aircraft primarily used by the Royal Air Force in the Second World War. The Tempest was an improved derivative of the Hawker Typhoon, and one of the most powerful fighter aircraft used during the war....

.

By 8 May 1945, the 8th, 9th and 15th Air Forces' P-51 groups claimed some 4,950 aircraft shot down (about half of all USAAF claims in the European theater), the most claimed by any Allied fighter in air-to-air combat, and 4,131 destroyed on the ground. Losses were about 2,520 aircraft. The 8th Air Force's 4th Fighter Group
4th Operations Group
The 4th Operations Group is the flying component of the 4th Fighter Wing, assigned to the United States Air Force Air Combat Command. The group is stationed at Seymour Johnson Air Force Base, North Carolina...

 was the overall top-scoring fighter group in Europe, with 1,016 enemy aircraft claimed destroyed. This included 550 claimed in aerial combat and 466 on the ground.

In aerial combat, the top-scoring P-51 units (both of which exclusively flew Mustangs) were the 357th Fighter Group
357th Fighter Group
The 357th Fighter Group was an air combat unit of the United States Army Air Forces during the Second World War. The 357th operated P-51 Mustang aircraft as part of the U.S. Eighth Air Force and its members were known unofficially as "The Yoxford Boys" after a village near their base...

 of the 8th Air Force with 565 air-to-air combat victories, and the Ninth Air Force's 354th Fighter Group with 664, which made it one of the top scoring fighter groups in aerial combat. Martin Bowman reports that in the European Theater of Operations
European Theater of Operations
The European Theater of Operations, United States Army was a United States Army formation which directed U.S. Army operations in parts of Europe from 1942 to 1945. It referred to Army Ground Forces, United States Army Air Forces, and Army Service Forces operations north of Italy and the...

, Mustangs flew 213,873 sorties and lost 2,520 aircraft to all causes. The top Mustang ace was the USAAF's George Preddy
George Preddy
George Preddy was an American ace credited with 26.83 enemy air-to-air kills, ranking him as the top P-51 Mustang ace of World War II and sixth on the list of all-time highest scoring American aces....

, whose final tally stood at 26.333, 23 scored with the P-51, when he was shot down and killed by friendly fire
Friendly fire
Friendly fire is inadvertent firing towards one's own or otherwise friendly forces while attempting to engage enemy forces, particularly where this results in injury or death. A death resulting from a negligent discharge is not considered friendly fire...

 on Christmas Day 1944 during the Battle of the Bulge
Battle of the Bulge
The Battle of the Bulge was a major German offensive , launched toward the end of World War II through the densely forested Ardennes mountain region of Wallonia in Belgium, hence its French name , and France and...

.

In the Pacific Theatre

The P-51 was a relative latecomer to the Pacific Theatre. This was due largely to the need for the aircraft in Europe, although the P-38's twin-engine design was considered a safety advantage for long over-water flights. The first P-51s were deployed in the Far East later in 1944, operating in close-support and escort missions as well as for tactical photo reconnaissance. As the war in Europe wound down, the P-51 became more common: eventually, with the capture of Iwo Jima
Battle of Iwo Jima
The Battle of Iwo Jima , or Operation Detachment, was a major battle in which the United States fought for and captured the island of Iwo Jima from the Empire of Japan. The U.S...

, it was able to be used as a bomber escort during B-29 Superfortress
B-29 Superfortress
The B-29 Superfortress is a four-engine propeller-driven heavy bomber designed by Boeing that was flown primarily by the United States Air Forces in late-World War II and through the Korean War. The B-29 was one of the largest aircraft to see service during World War II...

 missions against the Japanese homeland.

Expert opinions

Chief Naval Test Pilot and C.O. Captured Enemy Aircraft Flight Capt. Eric Brown, CBE, DSC, AFC, RN, tested the Mustang in RAE Farnborough, and noted: "The Mustang was a good fighter and the best escort due to its incredible range, make no mistake about it. It was also the best American dogfighter. But the laminar flow wing fitted to the Mustang could be a little tricky. It could not by any means out-turn a Spitfire
Supermarine Spitfire
The Supermarine Spitfire is a British single-seat fighter aircraft that was used by the Royal Air Force and many other Allied countries throughout the Second World War. The Spitfire continued to be used as a front line fighter and in secondary roles into the 1950s...

. No way. It had a good rate-of-roll, better than the Spitfire, so I would say the plusses to the Spitfire and the Mustang just about equate. If I were in a dogfight, I’d prefer to be flying the Spitfire. The problem was I wouldn’t like to be in a dogfight near Berlin, because I could never get home to Britain in a Spitfire!"

Luftwaffe Experten were confident that they could out-maneuver the P-51 in a dogfight. Kurt Bühligen, the third-highest scoring German fighter pilot of the Second World War on the Western Front, with 112 victories, later recalled that "We would out-turn the P-51 and the other American fighters, with the (Bf) "109" or the (Fw) "190". Their turn rate was about the same. The P-51 was faster than us but our munitions and cannon were better." Robert S. Johnson
Robert S. Johnson
Lieutenant Colonel Robert Samuel Johnson was a USAAF fighter pilot during World War II. He is credited with scoring 27 victories during the conflict flying a Republic P-47 Thunderbolt....

, the second-highest scoring U.S. fighter pilot in European theatre flew the P-47 against German fighters. Johnson pointed out: "Generally speaking, I’d say the best (Focke-Wulf) 190s and the P-51 were very close in performance; the difference was probably in the pilot in these combats."

Post-World War II

In the aftermath of World War II, the USAAF consolidated much of its wartime combat force and selected the P-51 as a "standard" piston-engine fighter, while other types, such as the P-38 and P-47, were withdrawn or given substantially reduced roles. However, as more advanced jet fighters (P-80 and P-84) were being introduced, the P-51 was relegated to secondary status.

In 1947, the newly-formed USAF Strategic Air Command
Strategic Air Command
The Strategic Air Command was both a Major Command of the United States Air Force and a "specified command" of the United States Department of Defense. SAC was the operational establishment in charge of America's land-based strategic bomber aircraft and land-based intercontinental ballistic...

 employed Mustangs alongside F-6 Mustangs and F-82 Twin Mustangs, due to their range capabilities. In 1948, the designation P-51 (P for pursuit) was changed to F-51 (F for fighter), and the existing F designator for photographic reconnaissance aircraft was dropped because of a new designation scheme throughout the USAF. Aircraft still in service in the USAF or Air National Guard (ANG) when the system was changed included: F-51B, F-51D, F-51K, RF-51D (formerly F-6D), RF-51K (formerly F-6K), and TRF-51D (two-seat trainer conversions of F-6Ds). They remained in service from 1946 through 1951. By 1950, although Mustangs continued in service with the USAF after the war, the majority of the USAF's Mustangs had been surplussed or transferred to the Air Force Reserve (AFRES) and the Air National Guard
Air National Guard
The Air National Guard , often referred to as the Air Guard, is the air force militia organized by each of the fifty U.S. states, the commonwealth of Puerto Rico, the territories of Guam and the U.S. Virgin Islands, and the District of Columbia of the United States. Established under Title 10 and...

 (ANG).

During the Korean War
Korean War
The Korean War was a conventional war between South Korea, supported by the United Nations, and North Korea, supported by the People's Republic of China , with military material aid from the Soviet Union...

, F-51s, though obsolete as fighters, were used as close ground-support aircraft and reconnaissance aircraft until the end of the war in 1953. Because of its lighter structure and less availability of spare parts, the newer, faster F-51H was not used in Korea. With the aircraft being used for ground attack, its performance was less of a concern than its ability to carry a load.

At the start of the Korean War, the Mustang once again proved its usefulness. With the availability of F-51Ds in service and in storage, a substantial number were shipped via aircraft carriers to the combat zone for use initially by both the Republic of Korea Air Force
Republic of Korea Air Force
The Republic of Korea Air Force is the air force of South Korea...

 (ROKAF) and USAF. Rather than employing them as interceptors or "pure" fighters, the F-51 was given the task of ground attack, fitted with rockets and bombs. After the initial invasion from North Korea, USAF units were forced to fly from bases in Japan, and F-51Ds could hit targets in Korea that short-ranged F-80 jet fighters could not. A major concern over the vulnerability of the cooling system was realized in heavy losses due to ground fire. Mustangs continued flying with USAF and ROKAF fighter-bomber units on close support and interdiction missions in Korea until they were largely replaced by Republic F-84 and Grumman Panther
F9F Panther
|-Popular culture:The Panther played a prominent role in the 1954 movie Men of the Fighting Lady . The F9F was featured in the flying sequences in the 1954 movie The Bridges at Toko-Ri, although in the 1953 James A...

 jet fighter-bombers in 1953. No. 77 Squadron
No. 77 Squadron RAAF
No. 77 Squadron is a Royal Australian Air Force fighter squadron. The Squadron was formed in 1942 and currently operates F/A-18 Hornet aircraft from RAAF Base Williamtown.-History:...

 Royal Australian Air Force
Royal Australian Air Force
The Royal Australian Air Force is the air force branch of the Australian Defence Force. The RAAF was formed in March 1921. It continues the traditions of the Australian Flying Corps , which was formed on 22 October 1912. The RAAF has taken part in many of the 20th century's major conflicts...

 (RAAF) operated Australian-built Mustangs as part of British Commonwealth Forces Korea
British Commonwealth Forces Korea
British Commonwealth Forces Korea was the formal name, from 1952, of the Commonwealth army, naval and air units serving with the United Nations in the Korean War. Australian, British, Canadian, Indian and New Zealand units were part of BCFK...

, replacing them with Gloster Meteor
Gloster Meteor
The Gloster Meteor was the first British jet fighter and the Allies' first operational jet. It first flew in 1943 and commenced operations on 27 July 1944 with 616 Squadron of the Royal Air Force...

 F8s in 1951. No. 2 Squadron South African Air Force
South African Air Force
The South African Air Force is the air force of South Africa, with headquarters in Pretoria. It is the world's second oldest independent air force, and its motto is Per Aspera Ad Astra...

 (SAAF) operated US-built Mustangs as part of the US 18th Fighter Bomber Wing
18th Wing
The United States Air Force's 18th Wing is the host wing for Kadena Air Base, Okinawa, Japan and is the Air Force’s largest combat wing. It is the largest and principal organization in the Pacific Air Forces Fifth Air Force....

, suffering heavy losses by 1953, when it converted to the F-86 Sabre.

F-51s flew in the Air Force Reserve and Air National Guard
Air National Guard
The Air National Guard , often referred to as the Air Guard, is the air force militia organized by each of the fifty U.S. states, the commonwealth of Puerto Rico, the territories of Guam and the U.S. Virgin Islands, and the District of Columbia of the United States. Established under Title 10 and...

 throughout the 1950s. The last American USAF Mustang was F-51D-30-NA AF Serial No. 44-74936, which was finally withdrawn from service with the West Virginia Air National Guard
West Virginia Air National Guard
The West Virginia Air National Guard is the air force militia of the U.S. state of West Virginia. It is, along with the West Virginia Army National Guard, an element of the West Virginia National Guard...

 in 1957. This aircraft is now on display at the National Museum of the United States Air Force
National Museum of the United States Air Force
The National Museum of the United States Air Force is the official museum of the United States Air Force located at Wright-Patterson Air Force Base northeast of Dayton, Ohio. The NMUSAF is the world's largest and oldest military aviation museum with more than 360 aircraft and missiles on display...

 at Wright-Patterson AFB in Dayton, Ohio
Dayton, Ohio
Dayton is the 6th largest city in the U.S. state of Ohio and the county seat of Montgomery County, the fifth most populous county in the state. The population was 141,527 at the 2010 census. The Dayton Metropolitan Statistical Area had a population of 841,502 in the 2010 census...

. It is, however, painted as P-51D-15-NA Serial No. 44-15174.
The final withdrawal of the Mustang from USAF dumped hundreds of P-51s out onto the civilian market. The rights to the Mustang design were purchased from North American by the Cavalier Aircraft
Cavalier Aircraft
Cavalier Aircraft Corporation was a Sarasota, Florida, aircraft manufacturing, sales, and maintenance company whose most famous products were refurbished P-51D Mustangs known as "Cavalier Mustangs."-Origins:...

 Corporation, which attempted to market the surplus Mustang aircraft both in the U.S. and overseas. In 1967 and again in 1972, the USAF procured batches of remanufactured Mustangs from Cavalier, most of them destined for air forces in South America and Asia that were participating in the Military Assistance Program (MAP)
Mutual Defense Assistance Act
The Mutual Defense Assistance Act was a United States Act of Congress signed by President Harry S. Truman on 6 October 1949. For US Foreign policy, it was the first U.S. military foreign aid legislation of the Cold War era, and initially to Europe...

. These aircraft were remanufactured from existing original F-51D airframes but were fitted with new V-1650-7 engines, a new radio fit, tall F-51H-type vertical tails, and a stronger wing that could carry six 0.5 in (12.7 mm) machine guns and a total of eight underwing hardpoints. Two 1,000 lb (454 kg) bombs and six 5 in (127 mm) rockets could be carried. They all had an original F-51D-type canopy, but carried a second seat for an observer behind the pilot. One additional Mustang was a two-seat dual-control TF-51D (67-14866) with an enlarged canopy and only four wing guns. Although these remanufactured Mustangs were intended for sale to South American and Asian nations through the MAP, they were delivered to the USAF with full USAF markings. They were, however, allocated new serial numbers (67-14862/14866, 67-22579/22582 and 72-1526/1541).

The last U.S. military use of the F-51 was in 1968, when the U. S. Army
United States Army
The United States Army is the main branch of the United States Armed Forces responsible for land-based military operations. It is the largest and oldest established branch of the U.S. military, and is one of seven U.S. uniformed services...

 employed a vintage F-51D (44-72990) as a chase aircraft for the Lockheed YAH-56 Cheyenne
AH-56 Cheyenne
The Lockheed AH-56 Cheyenne was a single-engine attack helicopter developed by Lockheed for the United States Army's Advanced Aerial Fire Support System program to produce the Army's first dedicated attack helicopter...

 armed helicopter project. This aircraft was so successful that the Army ordered two F-51Ds from Cavalier in 1968 for use at Fort Rucker
Fort Rucker
Fort Rucker is a U.S. Army post located mostly in Dale County, Alabama, United States. It was named for a Civil War officer, Confederate General Edmund Rucker. The post is the primary flight training base for Army Aviation and is home to the United States Army Aviation Center of Excellence and...

 as chase planes. They were assigned the serials 68-15795 and 68-15796. These F-51s had wingtip fuel tanks and were unarmed. Following the end of the Cheyenne program, these two chase aircraft were used for other projects. One of them (68-15795) was fitted with a 106 mm recoilless rifle for evaluation of the weapon's value in attacking fortified ground targets. Cavalier Mustang 68-15796 survives at the Air Force Armament Museum
Air Force Armament Museum
The Air Force Armament Museum, adjacent to Eglin Air Force Base, Florida, is the only facility in the U.S. dedicated to the display of Air Force armament...

, Eglin AFB, Florida, displayed indoors in World War II markings.

The F-51 was adopted by many foreign air forces and continued to be an effective fighter into the mid-1980s with smaller air arms. The last Mustang ever downed in battle occurred during Operation Power Pack
Operation Power Pack
The second United States occupation of the Dominican Republic began when the United States Marines Corps entered Santo Domingo on April 28, 1965. They were later joined by most of the United States Army's 82nd Airborne Division and its parent XVIIIth Airborne Corps...

 in the Dominican Republic
Dominican Republic
The Dominican Republic is a nation on the island of La Hispaniola, part of the Greater Antilles archipelago in the Caribbean region. The western third of the island is occupied by the nation of Haiti, making Hispaniola one of two Caribbean islands that are shared by two countries...

 in 1965, with the last aircraft finally being retired by the Dominican Air Force (FAD) in 1984.

Non-US service

After World War II, the P-51 Mustang served in the air arms of more than 55 nations. During wartime, a Mustang cost about 51,000 dollars, while many hundreds were sold postwar for the nominal price of one dollar to the American countries that signed the Inter-American Treaty of Reciprocal Assistance
Inter-American Treaty of Reciprocal Assistance
The Inter-American Treaty of Reciprocal Assistance was an agreement signed on 1947 in Rio de Janeiro among many countries of the Americas...

, ratified in Rio de Janeiro
Rio de Janeiro
Rio de Janeiro , commonly referred to simply as Rio, is the capital city of the State of Rio de Janeiro, the second largest city of Brazil, and the third largest metropolitan area and agglomeration in South America, boasting approximately 6.3 million people within the city proper, making it the 6th...

 in 1947.
Following is a list of some of the countries that used the P-51 Mustang.
In November 1944, 3 Squadron RAAF
No. 3 Squadron RAAF
No. 3 Squadron is a Royal Australian Air Force fighter squadron. It was first formed in 1916 and currently operates F/A-18 Hornet aircraft from RAAF Base Williamtown, near Newcastle, New South Wales.-World War I:...

 became the first Royal Australian Air Force
Royal Australian Air Force
The Royal Australian Air Force is the air force branch of the Australian Defence Force. The RAAF was formed in March 1921. It continues the traditions of the Australian Flying Corps , which was formed on 22 October 1912. The RAAF has taken part in many of the 20th century's major conflicts...

 unit to use Mustangs. At the time of its conversion from the P-40 to the Mustang the squadron was based in Italy with the RAF's First Tactical Air Force. By this time, the Australian government had also decided to order Australian-built Mustangs, to replace its Curtiss Kittyhawks
Curtiss P-40
The Curtiss P-40 Warhawk was an American single-engine, single-seat, all-metal fighter and ground attack aircraft that first flew in 1938. The P-40 design was a modification of the previous Curtiss P-36 Hawk which reduced development time and enabled a rapid entry into production and operational...

 and CAC Boomerang
CAC Boomerang
The CAC Boomerang was a World War II fighter aircraft designed and manufactured in Australia between 1942 and 1945. The Commonwealth Aircraft Corporation produced Boomerangs under the production contract numbers CA-12, CA-13, CA-14 and CA-19, with aircraft supplied under each subsequent contract...

s in the South West Pacific theatre
South West Pacific theatre of World War II
The South West Pacific Theatre, technically the South West Pacific Area, between 1942 and 1945, was one of two designated area commands and war theatres enumerated by the Combined Chiefs of Staff of World War II in the Pacific region....

. The Commonwealth Aircraft Corporation
Commonwealth Aircraft Corporation
The Commonwealth Aircraft Corporation was an Australian aircraft manufacturer. The CAC was established in 1936, to provide Australia with the capability to produce military aircraft and engines.-History:...

 (CAC) factory at Fishermans Bend, Melbourne
Melbourne
Melbourne is the capital and most populous city in the state of Victoria, and the second most populous city in Australia. The Melbourne City Centre is the hub of the greater metropolitan area and the Census statistical division—of which "Melbourne" is the common name. As of June 2009, the greater...

 was the only non-U.S. production line for the P-51.

In 1944, 100 P-51Ds were shipped from the US in kit form to inaugurate production. From February 1945, CAC assembled 80 of these under the designation CA-17 Mustang Mark 20, with the first one being handed over to the RAAF on 4 June 1945. The remaining 20 were kept unassembled as spare parts. In addition, 84 P-51Ks were also shipped directly to the RAAF from the USA.

In late 1946 CAC was given another contract to build 170 (reduced to 120) more P-51Ds on its own; these, designated CA-18 Mustang Mark 21, Mark 22 or Mark 23, were manufactured entirely in-house, with only a few components being sourced from overseas. The 21 and 22 used the American-built Packard V-1650-3 or V-1650-7. The Mark 23s, which followed the 21s, were powered by Rolls-Royce Merlin 66 or Merlin 70 engines. The first 26 were built as Mark 21s, followed by 66 Mark 23s; the first 14 Mark 21s were converted to fighter-reconnaissance aircraft, with two F24 cameras in both vertical and oblique positions in the rear fuselage, above and behind the radiator fairing; the designation of these modified Mustangs was changed from Mark 21 to Mark 22. An additional 14 purpose-built Mark 22s, built after the Mark 23s, and powered by either Packard V-1650-7s or Merlin 68s, completed the production run. All of the CA-17s and CA-18s, plus the 84 P-51Ks, used Australian serial numbers prefixed by A68.

3 Squadron was renumbered 4 Squadron
No. 4 Squadron RAAF
No. 4 Squadron is a Royal Australian Air Force squadron responsible for training forward air controllers. The squadron was previously a fighter and army co-operation unit active in both World War I and World War II.-World War I:...

 after returning to Australia from Italy and converted to CAC-built Mustangs. Several other Australian or Pacific based squadrons converted to P-51s from July 1945, having been equipped with P-40s or Boomerangs for wartime service; these units were: 76
No. 76 Squadron RAAF
No. 76 Squadron is a Royal Australian Air Force flight training squadron. Established in 1942, the squadron operated P-40 Kittyhawk fighter aircraft and saw combat during World War II. Following the war it formed part of Australia's contribution to the occupation of Japan until it was...

, 77
No. 77 Squadron RAAF
No. 77 Squadron is a Royal Australian Air Force fighter squadron. The Squadron was formed in 1942 and currently operates F/A-18 Hornet aircraft from RAAF Base Williamtown.-History:...

, 82
No. 82 Squadron RAAF
No. 82 Squadron RAAF was a Royal Australian Air Force fighter squadron. The Squadron was formed in June 1943 and was disbanded in October 1948 after seeing action during World War II and participating in the British Commonwealth Occupation Force.-History:...

, 83
No. 83 Squadron RAAF
No. 83 Squadron was a Royal Australian Air Force fighter squadron of World War II. It was formed in 1943 as a 'home defence' squadron and provided air defence to several locations in Queensland, the Northern Territory and New South Wales before being disbanded in 1945.-Squadron history:No. 83...

, 84
No. 84 Squadron RAAF
No. 84 Squadron was a Royal Australian Air Force fighter squadron of World War II.-History:No. 84 Squadron was formed at RAAF Base Richmond on 5 February 1943 and was the first RAAF Squadron to be equipped with the Australian-designed Boomerang fighter. In April 1943 No...

 and 86
No. 86 Squadron RAAF
No. 86 Squadron was a Royal Australian Air Force fighter squadron of World War II. The Squadron was formed in March 1943 and was disbanded in December 1945 after seeing action in the South West Pacific Theatre of the war.-History:...

 Squadrons. Only 17 Mustangs reached the RAAF's First Tactical Air Force
Australian First Tactical Air Force
The Australian First Tactical Air Force was formed on 25 October 1944 by the Royal Australian Air Force . Its purpose was to provide a mobile force of fighter and ground attack aircraft that could support Allied army and naval units fighting the Empire of Japan in the South West Pacific Area...

 front line squadrons by the time World War II ended in August 1945.

76, 77 and 82 Squadrons were formed into 81 Fighter Wing
No. 81 Wing RAAF
No. 81 Wing is the Royal Australian Air Force's air superiority wing. Formed during World War II, it operated in the South West Pacific theatre, flying P-40 Kittyhawks. Following the end of hostilities, it converted to P-51 Mustangs and was based in Japan as part of the Allied occupational forces...

 of the British Commonwealth Air Force
British Commonwealth Occupation Force
The British Commonwealth Occupation Force , was the name of the joint Australian, Canadian, British, Indian and New Zealand military forces in occupied Japan, from 21 February 1946 until the end of occupation in 1952...

 (BCAIR) which was part of the British Commonwealth Occupation Force
British Commonwealth Occupation Force
The British Commonwealth Occupation Force , was the name of the joint Australian, Canadian, British, Indian and New Zealand military forces in occupied Japan, from 21 February 1946 until the end of occupation in 1952...

 (BCOF) stationed in Japan from February 1946. 77 Squadron used its P-51s extensively during the first years of the Korean War, before converting to Gloster Meteor
Gloster Meteor
The Gloster Meteor was the first British jet fighter and the Allies' first operational jet. It first flew in 1943 and commenced operations on 27 July 1944 with 616 Squadron of the Royal Air Force...

 jets.

Five reserve units from the Citizen Air Force (CAF) also operated Mustangs. 21 "City of Melbourne" Squadron
No. 21 Squadron RAAF
No. 21 Squadron is a Royal Australian Air Force general reserve squadron. It saw action as a fighter, dive bomber and heavy bomber unit during World War II.-History:...

, based in the state of Victoria
Victoria (Australia)
Victoria is the second most populous state in Australia. Geographically the smallest mainland state, Victoria is bordered by New South Wales, South Australia, and Tasmania on Boundary Islet to the north, west and south respectively....

; 22 "City of Sydney" Squadron
No. 22 Squadron RAAF
No. 22 Squadron is a Royal Australian Air Force mixed regular and reserve squadron that provides support for the RAAF in the Sydney region. Formed in 1936, the squadron served in Papua New Guinea during the Second World War, and later followed the Pacific war as far as the Philippines...

, based in New South Wales
New South Wales
New South Wales is a state of :Australia, located in the east of the country. It is bordered by Queensland, Victoria and South Australia to the north, south and west respectively. To the east, the state is bordered by the Tasman Sea, which forms part of the Pacific Ocean. New South Wales...

; 23 "City of Brisbane" Squadron
No. 23 Squadron RAAF
No. 23 Squadron of the Royal Australian Air Force is a non-flying base operations and training squadron headquartered at RAAF Base Amberley near Brisbane, Queensland. The Squadron was formed in 1937 and saw action during World War II as a bomber squadron.-History:No...

, based in Queensland; 24 "City of Adelaide" Squadron
No. 24 Squadron RAAF
No. 24 Squadron is a Royal Australian Air Force squadron. The Squadron was formed in 1940 and saw action as a bomber squadron during World War II. Since the end of the war the Squadron has been an RAAF Reserve squadron located near Adelaide, South Australia....

, based in South Australia
South Australia
South Australia is a state of Australia in the southern central part of the country. It covers some of the most arid parts of the continent; with a total land area of , it is the fourth largest of Australia's six states and two territories.South Australia shares borders with all of the mainland...

; and 25 "City of Perth" Squadron
No. 25 Squadron RAAF
No. 25 Squadron is a general reserve squadron of the Royal Australian Air Force. The squadron is based at RAAF Base Pearce in Perth, Western Australia and forms part of the Combat Reserve Wing. The squadron has been based at Pearce since 1938. 25 Squadron was originally formed at RAAF Base...

, based in Western Australia. The last Mustangs were retired from these units in 1960 when CAF units adopted a non-flying role.

In October 1953, six Mustangs, including A68-1, the first Australian built CA-17 Mk 20, were allotted to the Long Range Weapons Development Establishment at Maralinga, South Australia
Maralinga, South Australia
Maralinga, South Australia in the remote western areas of South Australia was the home of the Maralinga Tjarutja, a southern Pitjantjatjara Indigenous Australian people. Maralinga was the site of the secret British nuclear tests in the 1950s. The site measures about 3,300 km² in area...

, for use in experiments to gauge the effects of low-yield nuclear atomic bombs
Nuclear weapon
A nuclear weapon is an explosive device that derives its destructive force from nuclear reactions, either fission or a combination of fission and fusion. Both reactions release vast quantities of energy from relatively small amounts of matter. The first fission bomb test released the same amount...

. The Mustangs were placed on a dummy airfield about 0.62 mi (1 km) from the blast tower on which two low-yield bombs were detonated. The Mustangs survived intact. In 1967, A68-1 was bought by a US syndicate, for restoration to flight status and is currently owned by Troy Sanders.


: Nine Cavalier F-51D (including the two TF-51s) were given to Bolivia, under a program called Peace Condor.

:
Canada had five squadrons equipped with Mustangs during World War II. RCAF 400
No. 400 Squadron RCAF
400 "City of Toronto" Tactical Helicopter and Training Squadron is part of 1 Wing, and as such a lodger unit of Canadian Forces Base Borden. The squadron operates the CH-146 Griffon.-History:...

, 414 and 430 squadrons flew Mustang Mk Is (1942-1944), and 441 and 442 Squadrons flew Mustang Mk IIIs and IVAs in 1945. Postwar, a total of 150 Mustang P-51Ds were purchased and served in two regular (416 "Lynx"
No. 416 Squadron RCAF
416 "City of Oshawa" Tactical Fighter Squadron was a unit of the Canadian Forces under Royal Canadian Air Force. The squadron operated the CF-188 Hornet fighter jet from CFB Cold Lake in Alberta, Canada...

 and 417 "City of Windsor") and six auxiliary fighter squadrons (402 "City of Winnipeg", 403 "City of Calgary", 420 "City of London", 424 "City of Hamilton", 442 "City of Vancouver" and 443 "City of New Westminster"). The Mustangs were declared obsolete in 1956, but a number of special-duty versions served on into the early 1960s.


: China acquired P-51Cs and P-51Ds from the U.S. 10th AF in India by early 1945. These Mustangs were provided to the 3rd, 4th and 5th Fighter Groups of the China Air Force (CAF) and used to attack Japanese targets in occupied areas of China. After the war Chiang Kai-shek
Chiang Kai-shek
Chiang Kai-shek was a political and military leader of 20th century China. He is known as Jiǎng Jièshí or Jiǎng Zhōngzhèng in Mandarin....

's Nationalist
Republic of China
The Republic of China , commonly known as Taiwan , is a unitary sovereign state located in East Asia. Originally based in mainland China, the Republic of China currently governs the island of Taiwan , which forms over 99% of its current territory, as well as Penghu, Kinmen, Matsu and other minor...

 government used the planes against insurgent Communist forces. The Nationalists retreated to Taiwan
Taiwan
Taiwan , also known, especially in the past, as Formosa , is the largest island of the same-named island group of East Asia in the western Pacific Ocean and located off the southeastern coast of mainland China. The island forms over 99% of the current territory of the Republic of China following...

 in 1949. Pilots supporting Chiang brought most of the Mustangs with them, where the aircraft became part of the island's defence arsenal. Taiwan subsequently acquired additional Mustangs from the USAF and other sources. Some Mustangs remained on the mainland, captured by Communist forces when the Nationalists left.

: The Costa Rica Air Force flew four P-51Ds from 1955 to 1964.

: In November 1958, three US-registered civilian P-51D Mustangs were illegally flown separately from Miami to Cuba, on delivery to the rebel forces of the 26th of July Movement
26th of July Movement
The 26th of July Movement was the revolutionary organization planned and led by Fidel Castro that in 1959 overthrew the Fulgencio Batista government in Cuba...

, then headed by Fidel Castro
Fidel Castro
Fidel Alejandro Castro Ruz is a Cuban revolutionary and politician, having held the position of Prime Minister of Cuba from 1959 to 1976, and then President from 1976 to 2008. He also served as the First Secretary of the Communist Party of Cuba from the party's foundation in 1961 until 2011...

 during the Cuban Revolution
Cuban Revolution
The Cuban Revolution was an armed revolt by Fidel Castro's 26th of July Movement against the regime of Cuban dictator Fulgencio Batista between 1953 and 1959. Batista was finally ousted on 1 January 1959, and was replaced by a revolutionary government led by Castro...

. One of the Mustangs was damaged during delivery, and none of them was used operationally. After the success of the revolution in January 1959, with other rebel aircraft plus those of the existing Cuban government forces, they were adopted into the Fuerza Aérea Revolucionaria. Due to increasing US restrictions, lack of spares and maintenance experience, they never achieved operational status. At the time of the Bay of Pigs invasion
Bay of Pigs Invasion
The Bay of Pigs Invasion was an unsuccessful action by a CIA-trained force of Cuban exiles to invade southern Cuba, with support and encouragement from the US government, in an attempt to overthrow the Cuban government of Fidel Castro. The invasion was launched in April 1961, less than three months...

, the two intact Mustangs were already effectively grounded at Campo Columbia and at Santiago. After the failed invasion, they were placed on display with other symbols of "revolutionary struggle", and one remains on display at the Museo del Aire (Cuba)
Museo del Aire (Cuba)
The Museo del Aire was a national aviation museum located in the south-western suburbs of Havana, Cuba. Until August 2010, the Museum address was: Museo del Aire, Avenida 212, entre la avenida 29 y 31, La Coronela, La Lisa...

.

: The Dominican Republic (FAD) was the largest Latin American air force to employ the P-51D, with six aircraft acquired in 1948, 44 ex-Swedish F-51Ds purchased in 1948 and a further Mustang obtained from an unknown source. It was the last nation to have any Mustangs in service, with some remaining in use as late as 1984.

: The FAS purchased five Cavalier Mustang IIs (and one dual control Cavalier TF-51) that featured wingtip fuel tanks to increase combat range and up-rated Merlin engines. Seven P-51D Mustangs were also in service. They were used during the 1969 Soccer War
Football War
The Football War , also known as the Soccer War or 100 hour War, was a four-day war fought by El Salvador and Honduras in 1969. It was caused by political conflicts between Hondurans and Salvadorans, namely issues concerning immigration from El Salvador to Honduras...

 against Honduras, the last time the P-51 was used in combat. One of them, FAS-404, was shot down by a F4U-5 flown by Cap. Fernando Soto in the last aerial combat between piston engine fighters in the world.

: In late 1944, the first French unit began its transition to reconnaissance Mustangs. In January 1945, the Tactical Reconnaissance Squadron 2/33 of the French Air Force took their F-6Cs and F-6Ds over Germany on photographic mapping missions. The Mustangs remained in service until the early 1950s, when they were replaced by jet fighters.

 Germany: Several P-51s were captured by the Luftwaffe as Beuteflugzeug (captured aircraft) following crash landings. These aircraft were subsequently repaired and test-flown by the Zirkus Rosarius
Zirkus Rosarius
Zirkus Rosarius was an Erprobungskommando-style special test unit of the Luftwaffe, specifically of the Luftwaffe High Command, tasked with testing captured British and American aircraft, all of which were repainted in German markings...

, or "Rosarius Staffel", the official Erprobungskommando
Erprobungskommando
An Erprobungskommando was a Luftwaffe unit tasked with the testing of new aircraft and weaponry under operational conditions.-Erprobungskommando 16:...

 of the Luftwaffe High Command, for combat evaluation at Göttingen
Göttingen
Göttingen is a university town in Lower Saxony, Germany. It is the capital of the district of Göttingen. The Leine river runs through the town. In 2006 the population was 129,686.-General information:...

. The aircraft were repainted with German markings and bright yellow nose and belly for identification. A number of P-51B/P-51Cs (including examples marked with Luftwaffe Geschwaderkennung codes T9+CK, T9+FK, T9+HK and T9+PK) and three P-51Ds were captured. Some of these P-51s were found by Allied forces at the end of the war; others crashed during testing. The Mustang is also listed in the appendix to the novel KG 200 as having been flown by the German secret operations unit KG 200, which tested, evaluated and sometimes clandestinely operated captured enemy aircraft during World War II
World War II
World War II, or the Second World War , was a global conflict lasting from 1939 to 1945, involving most of the world's nations—including all of the great powers—eventually forming two opposing military alliances: the Allies and the Axis...

.

: The Fuerza Aérea Guatemalteca (FAG) had 30 P-51D Mustangs in service from 1954 to the early 1970s.

: Haiti had four P-51D Mustangs when President Paul Eugène Magloire was in power between 1950 and 1956, with the last retired in 1973-74 and sold for spares to the Dominican Republic.

: Indonesia acquired some P-51Ds from the departing Netherlands East Indies Air Force in 1949 and 1950. The Mustangs were used against Commonwealth (RAF, RAAF and RNZAF) forces during the Indonesian confrontation in the early 1960s. The last time Mustangs were deployed for military purposes was a shipment of six Cavalier II Mustangs (without tip tanks) delivered to Indonesia in 1972–1973, which were replaced in 1976.

: A few P-51 Mustangs were illegally bought by Israel in 1948, crated and smuggled into the country as agricultural equipment for use in the War of Independence (1948) and quickly established themselves as the best fighter in the Israeli inventory. Further aircraft were bought from Sweden, and were replaced by jets at the end of the 1950s, but not before the type was used in the Suez Crisis
Suez Crisis
The Suez Crisis, also referred to as the Tripartite Aggression, Suez War was an offensive war fought by France, the United Kingdom, and Israel against Egypt beginning on 29 October 1956. Less than a day after Israel invaded Egypt, Britain and France issued a joint ultimatum to Egypt and Israel,...

, Operation Kadesh (1956). Reputedly, during this conflict, one daring Israeli pilot literally cut communications between Suez City and the Egyptian front lines by using his Mustang's propeller on the telephone
Telephone
The telephone , colloquially referred to as a phone, is a telecommunications device that transmits and receives sounds, usually the human voice. Telephones are a point-to-point communication system whose most basic function is to allow two people separated by large distances to talk to each other...

 wires.
: Italy was a postwar operator of P-51Ds; deliveries were slowed by the Korean war, but between September 1947 and January 1951, by MDAP count, 173 examples were delivered. They were used in all the AMI fighter units: 2, 3, 4, 5, 6, and 51 Stormo (Wing), and some in schools and experimental units. Considered a "glamorous" fighter, P-51s were even used as personal aircraft by several Italian commanders. Some restrictions were placed on its use due to unfavorable flying characteristics. Handling had to be done with much care when fuel tanks were fully utilized and several aerobatic maneuvers were forbidden. Overall, the P-51D was highly rated even compared to the other primary postwar fighter in Italian service, the Supermarine Spitfire, partly because these P-51Ds were in very good condition in contrast to all other Allied fighters supplied to Italy. Phasing out of the Mustang began in summer 1958.

: The P-51C-11-NT Evalina, marked as "278" (former USAAF serial: 44-10816) and flown by 26th FS, 51st FG, was hit by gunfire on 16 January 1945 and belly-landed on Suchon Airfield in China, which was held by the Japanese. The Japanese repaired the aircraft, roughly applied Hinomaru roundel
Roundel
A roundel in heraldry is a disc; the term is also commonly used to refer to a type of national insignia used on military aircraft, generally circular in shape and usually comprising concentric rings of different colours.-Heraldry:...

s and flew the aircraft to the Fussa evaluation centre (now Yokota Air Base) in Japan.

: The Royal Netherlands East Indies Army Air Force
Royal Netherlands East Indies Army Air Force
The Royal Netherlands East Indies Army Air Force was the air arm of the Royal Netherlands East Indies Army in the Dutch East Indies from 1939 until 1950...

 received 40 P-51Ds and flew them during the Indonesian National Revolution
Indonesian National Revolution
The Indonesian National Revolution or Indonesian War of Independence was an armed conflict and diplomatic struggle between Indonesia and the Dutch Empire, and an internal social revolution...

 particularly the two 'politionele acties
Politionele acties
"Politionele Acties" refers to two major military offensives undertaken by the Netherlands on Java and Sumatra against the Republic of Indonesia during its struggle for independence in the Indonesian National Revolution...

': Operatie Product
Operatie Product
Operatie Product, was the first of two major Dutch military offensives against the Republic of Indonesia during the Indonesian National Revolution. It took place following Dutch assertions that Indonesia cooperated insufficiently in the implementation of the Linggadjati Agreement, which had been...

 in 1947 and Operatie Kraai
Operatie Kraai
Operatie Kraai was the code name for a Dutch military offensive against the newly formed Republic of Indonesia in December 1948 - January 1949...

 in 1949. When the conflict was over, Indonesia received some of the ML-KNIL Mustangs.

: Fuerza Aerea de Nicaragua (GN) purchased 26 P-51D Mustangs from Sweden in 1954 and later received 30 P-51D Mustangs from the US together with two TF-51 models from MAP after 1954. All aircraft of this type were retired from service by 1964.
:
New Zealand ordered 370 P-51 Mustangs to supplement its F4U Corsair
F4U Corsair
The Vought F4U Corsair was a carrier-capable fighter aircraft that saw service primarily in World War II and the Korean War. Demand for the aircraft soon overwhelmed Vought's manufacturing capability, resulting in production by Goodyear and Brewster: Goodyear-built Corsairs were designated FG and...

s in the Pacific Ocean Areas
Pacific Ocean Areas
Pacific Ocean Areas was a major Allied military command in the Pacific Ocean theater of World War II. It was one of four major Allied commands during the Pacific War, and one of two United States commands in the Pacific Theater of Operations. Admiral Chester W. Nimitz of the U.S...

 theatre. Scheduled deliveries were for an initial batch of 30 P-51Ds, followed by 137 more P-51Ds and 203 P-51Ms. The original 30 were being shipped as the war ended in August 1945; these were stored in their packing cases and the order for the additional Mustangs was cancelled. In 1951 the stored Mustangs entered service in 1 (Auckland)
No. 1 Squadron RNZAF
No. 1 Squadron RNZAF was a New Zealand reconnaissance and patrol bomber squadron operating in the Pacific Theatre during World War II; post war the squadron served in the transport and VIP role.-History:...

, 2(Wellington)
No. 2 Squadron RNZAF
No. 2 Squadron RNZAF was a squadron of the Royal New Zealand Air Force. It was formed in 1930 as part of the Territorial Air Force with the main Headquarters at Wellington and shadow flights at New Plymouth and Wanganui. Squadron personnel conducted their annual flying at RNZAF Base Wigram...

, 3 (Canterbury)
No. 3 Squadron RNZAF
3 Squadron is a unit of the RNZAF. It remains on active duty.-History:No. 3 Squadron RNZAF formed as a Territorial unit of the New Zealand Permanent Air Force based at Christchurch in 1930....

 and 4 (Otago)
No. 4 Squadron RNZAF
No. 4 Squadron RNZAF was a New Zealand patrol bomber unit in the South Pacific during World War II.-History:Due to activity by German surface raiders, the squadron was hurriedly formed in October 1940, initially equipped with a range of hurriedly converted civilian airliners, the twin engined de...

 squadrons of the Territorial Air Force (TAF). The Mustangs remained in service until they were prematurely retired in August 1955 following a series of problems with undercarriage and coolant system corrosion problems. Four Mustangs served on as target tugs until the TAF was disbanded in 1957. RNZAF pilots in the Royal Air Force also flew the P-51, and at least one New Zealand pilot scored victories over Europe while on loan to a USAAF P-51 squadron.


:
The Philippines acquired 103 P-51D Mustangs after World War II. These became the backbone of the postwar Philippine Army Air Corps
Philippine Army Air Corps
The Philippine Army Air Corps was created by the Philippine National Assembly's National Defense Act of 1935. By 1940, the corps had around 40 aircraft and 100 pilots, 500 personnel, and six squadrons...

 and Philippine Air Force
Philippine Air Force
The Philippine Air Force is the air force of the Republic of the Philippines, and one of the three main services of the Armed Forces of the Philippines. Its official name in Filipino is Hukbong Himpapawid ng Pilipinas....

 and were used extensively during the Huk
Hukbalahap
The Hukbalahap , was the military arm of the Communist Party of the Philippines , formed in 1942 to fight the Japanese Empire's occupation of the Philippines during World War II. It fought a second war from 1946 to 1954 against the pro-Western leaders of their newly independent country...

 campaign, fighting against Communist insurgents.
Mustangs were also the first aircraft of the Philippine air demonstration squadron, which was formed in 1953 and given the name "The Blue Diamonds" the following year. The Mustangs were replaced by 50 F-86 Sabres in the late 1950s, but some were still in service for COIN roles up to the early 1970s.

: See China above; the Chinese Communists captured a few P-51s from the Chinese Nationalists as they were retreating to Taiwan.

:
During World War II, five Polish Air Force in Great Britain
Polish Air Forces in France and Great Britain
The Polish Air Forces was a name of Polish Air Forces formed in France and the United Kingdom during World War II. The core of the Polish air units fighting alongside the allies were experienced veterans of Invasion of Poland of 1939 and they contributed to Allied victory in the Battle of Britain...

 squadrons used Mustangs. The first Polish unit equipped (7 June 1942) with Mustang Mk Is was "B" Flight of 309 "Ziemi Czerwieńskiej" Squadron (an Army Co-Operation Command unit), followed by "A" Flight in March 1943. Subsequently, 309 Squadron was redesignated a fighter/reconnaissance unit and became part of Fighter Command. On 13 March 1944, 316 "Warszawski" Squadron
No. 316 Polish Fighter Squadron
No. 316 "City of Warsaw" Polish Fighter Squadron was a Polish fighter squadron formed in Great Britain as part of an agreement between the Polish Government in Exile and the United Kingdom in 1941...

 received their first Mustang Mk IIIs; rearming of the unit was completed by the end of April. By 26 March 1943, 306 "Toruński" Sqn
No. 306 Polish Fighter Squadron
No. 306 Polish Fighter Squadron was a Polish fighter squadron formed in Great Britain as part of an agreement between the Polish Government in Exile and the United Kingdom in 1940...

 and 315 "Dębliński" Sqn
No. 315 Polish Fighter Squadron
No 315 Polish Fighter Squadron was a Polish fighter squadron formed in Great Britain as part of an agreement between the Polish Government in Exile and the United Kingdom in 1941. It was one of several Polish fighter squadrons fighting alongside the Royal Air Force during the World War II...

 received Mustangs Mk IIIs (the whole operation took 12 days). On 20 October 1944, Mustang Mk Is in No. 309 Squadron were replaced by Mk IIIs. On 11 December 1944, the unit was again renamed, becoming 309 Dywizjon Myśliwski "Ziemi Czerwieńskiej" or 309 "Land of Czerwien" Polish Fighter Squadron. In 1945, 303 "Kościuszko" Sqn
No. 303 Polish Fighter Squadron
No. 303 Polish Fighter Squadron was one of 16 Polish squadrons in the Royal Air Force during the Second World War. It was the highest scoring RAF squadron of the Battle of Britain....

 received 20 Mustangs Mk IV/Mk IVA replacements. Postwar, between 6 December 1946 and 6 January 1947, all five Polish squadrons equipped with Mustangs were disbanded. Poland returned approximately 80 Mustangs Mk IIIs and 20 Mustangs Mk IV/IVAs to the RAF, which transferred them to the U.S. government.


: The Somalian Air Force operated eight P-51Ds in post-World War II service.

 South Africa: The South African Air Force
South African Air Force
The South African Air Force is the air force of South Africa, with headquarters in Pretoria. It is the world's second oldest independent air force, and its motto is Per Aspera Ad Astra...

 operated a number of Mustang Mk Is and Mk IIs (P-51As) in Italy and the Middle East during World War II. After VE-Day, these machines were soon struck off charge and scrapped. In 1950, 2 Squadron SAAF was supplied with F-51D Mustangs by the United States for Korean War service. The type performed well in South African hands before being replaced by the F-86 Sabre in 1952 and 1953.

:
Within a month of the outbreak of the Korean War, 10 F-51D Mustangs were provided to the badly depleted Republic of Korea Air Force
Republic of Korea Air Force
The Republic of Korea Air Force is the air force of South Korea...

 as a part of the Bout One
Bout One
Bout One Project was an operation undertaken during the Korean War by U.S. Air Force to train Korean pilots to fly F-51 Mustang fighters.On June 27, 1950, as part of the project, a special unit was formed in Japan under Major Dean Hess, with the objective of training selected South Korean pilots to...

 Project. They were flown by both South Korean airmen, several of whom were veterans of the Imperial Japanese Army and Navy air services during World War II, as well as by U.S. advisers led by Major Dean Hess
Dean Hess
Dean E. Hess was an American minister and United States Air Force colonel who was involved in the so-called "Kiddy Car Airlift," the documented rescue of 950 orphans and 80 orphanage staff from the path of the Chinese advance during the Korean War on December 20, 1950...

. Later, more were provided both from U.S. and from South African stocks, as the latter were converting to F-86 Sabres. They formed the backbone of the South Korean Air Force until they were replaced by Sabres.
It also served with the ROKAF Black Eagles aerobatic team
Black Eagles aerobatic team
The Black Eagles aerobatic team, the 239th squadron, is the flight display team of the Republic of Korea Air Force base at 8th FW. The Republic of Korea Air Force Aerobatic Team was operated in various occasions of national ceremonies and this has been fully encouraged and concerned by the nation...

, until retired 1954.


: Sweden's Flygvapnet
Swedish Air Force
The Swedish Air Force is the air force branch of the Swedish Armed Forces.-History:The Swedish Air Force was created on July 1, 1926 when the aircraft units of the Army and Navy were merged. Because of the escalating international tension during the 1930s the Air Force was reorganized and expanded...

first recuperated four of the P-51s (two P-51Bs and two early P-51Ds) that had been diverted to Sweden during missions over Europe. In February 1945, Sweden purchased 50 P-51Ds designated J 26, which were delivered by American pilots in April and assigned to the F 16 wing
F 16 Uppsala
F 16 Uppsala, Upplands Flygflottilj, Uppland Air Force Wing or simply "F 16" is a Swedish air force base located just north of Uppsala on the east coast of Sweden...

 at Uppsala
Uppsala
- Economy :Today Uppsala is well established in medical research and recognized for its leading position in biotechnology.*Abbott Medical Optics *GE Healthcare*Pfizer *Phadia, an offshoot of Pharmacia*Fresenius*Q-Med...

 as interceptors. In early 1946, the F 4 wing
F 4 Frösön
F 4 Frösön, Kungliga Jämtlands Flygflottilj, Royal Jämtland Air Force Wing, or simply "F 4", is a former Swedish Air Force wing with the main base located at Åre Östersund Airport outside Östersund on Frösön in the middle of Sweden....

 at Östersund
Östersund
Östersund is an urban area in Jämtland in the middle of Sweden. It is the seat of Östersund Municipality and the capital of Jämtland County. Östersund is located at the shores of Sweden's fifth largest lake, Storsjön, opposite the island Frösön, and is the only city in Jämtland. Östersund is the...

 was equipped with a second batch of 90 P-51Ds. A final batch of 21 Mustangs was purchased in 1948. In all, 161 J 26s served in the Swedish Air Force
Swedish Air Force
The Swedish Air Force is the air force branch of the Swedish Armed Forces.-History:The Swedish Air Force was created on July 1, 1926 when the aircraft units of the Army and Navy were merged. Because of the escalating international tension during the 1930s the Air Force was reorganized and expanded...

 during the late 1940s. About a dozen were modified for photo reconnaissance and re-designated S 26. A few of these aircraft participated in the top secret Swedish mapping of new Soviet military installations at the Baltic coast in 1946-47 (Operation Falun), an endeavour that entailed many intentional violations of Soviet airspace. However, the Mustang could outdive any Soviet fighter of that era, so no S 26s were lost in these missions. The J 26s were replaced by De Havilland Vampire
De Havilland Vampire
The de Havilland DH.100 Vampire was a British jet-engine fighter commissioned by the Royal Air Force during the Second World War. Following the Gloster Meteor, it was the second jet fighter to enter service with the RAF. Although it arrived too late to see combat during the war, the Vampire served...

s around 1950. The S 26s were replaced by S 29Cs
Saab Tunnan
The Saab 29, popularly called Flygande tunnan , was a Swedish fighter designed and manufactured by Saab in the 1950s. It was Sweden's second turbojet-powered combat aircraft, the first being the Saab 21R...

 in the early 1950s.
The Swiss Air Force
Swiss Air Force
The Swiss Air Force is the air component of the Swiss Armed Forces, established on July 31, 1914, as part of the Army and as of January 1966 an independent service.In peacetime, Dübendorf is the operational Air Force HQ...

 operated a few USAAF P-51s that had been impounded by Swiss authorities during World War II after the pilots were forced to land in neutral Switzerland. After the war, Switzerland also bought 130 P-51s for $4,000 each. They served until 1958.


: The RAF was the first air force to operate the Mustang. Because the first Mustangs were built to British requirements, these planes used factory numbers and were not P-51s; the order comprised 320 NA-73s, followed by 300 NA-83s, all of which were designated North American Mustang Mark I
British military aircraft designation systems
British military aircraft designations are used to refer to aircraft types and variants operated by the armed forces of the United Kingdom.Since the end of the First World War, aircraft types in British military service have generally been known by a name British military aircraft designations are...

s by the RAF. The first RAF Mustangs diverted from American orders were 93 P-51s, designated Mark IA, followed by 50 P-51As used as Mustang IIs.
The first Mustang Mk Is entered service in 1941 the first unit being 2 Squadron RAF
No. 2 Squadron RAF
No. 2 Squadron of the Royal Air Force is currently one of two RAF squadrons operating in the reconnaissance role with the Tornado GR4A and GR4 and is based at RAF Marham, Norfolk.No. II Squadron holds claim to being "the oldest heavier-than-air flying machine squadron in the world", along with No...

. Due to poor high-altitude performance, the Mustangs were used by Army Co-operation Command
RAF Army Cooperation Command
RAF Army Cooperation Command was a short-lived major command of the Royal Air Force during World War II, comprising the army cooperation units of the RAF.The command was formed on 1 December 1940 when No...

, rather than Fighter Command, and were used for tactical reconnaissance and ground-attack duties. On 27 July 1942, 16 RAF Mustangs undertook their first long-range reconnaissance mission over Germany. During Operation Jubilee
Dieppe Raid
The Dieppe Raid, also known as the Battle of Dieppe, Operation Rutter or later on Operation Jubilee, during the Second World War, was an Allied attack on the German-occupied port of Dieppe on the northern coast of France on 19 August 1942. The assault began at 5:00 AM and by 10:50 AM the Allied...

 (19 August 1942) four British and Canadian Mustang squadrons, including 26 Squadron
No. 26 Squadron RAF
No. 26 Squadron of the Royal Air Force was formed in 1915 and was disbanded for the last time in 1976.The squadron motto is N Wagter in die Lug , and the squadrons badge is a springbok's head couped.-1915 to 1918:...

 saw action. By 1943/1944, British Mustangs were used extensively to seek out V-1 flying bomb
V-1 flying bomb
The V-1 flying bomb, also known as the Buzz Bomb or Doodlebug, was an early pulse-jet-powered predecessor of the cruise missile....

 sites. The final RAF Mustang Mk I and Mustang Mk II aircraft were struck off charge in 1945.

The RAF also operated a total of 308 P-51Bs and 636 P-51Cs which were known in RAF service as Mustang Mk IIIs; the first units converted to the type in late 1943 and early 1944. Mustang Mk III units were operational until the end of World War II, though many units had already converted to the Mustang Mk IV and Mk IVAs (828 in total, comprising 282 P-51D-NAs or Mk IVs, and 600 P-51Ks or Mk IVA). As the Mustang was a Lend-Lease
Lend-Lease
Lend-Lease was the program under which the United States of America supplied the United Kingdom, the Soviet Union, China, Free France, and other Allied nations with materiel between 1941 and 1945. It was signed into law on March 11, 1941, a year and a half after the outbreak of war in Europe in...

 type, all aircraft still on RAF charge at the end of the war were either returned to the USAAF "on paper" or retained by the RAF for scrapping. The final Mustangs were retired from RAF use in 1947.


: The Soviet Union received at least 10 early-model ex-RAF Mustang Is and tested but found them to "under-perform" compared to contemporary USSR fighters, relegating them to training units. Later Lend-Lease deliveries of the P-51B/C and D series along with other Mustangs abandoned in Russia after the famous "shuttle missions" were repaired and used by the Soviet Air Force, but not in front-line service.

: The Uruguayan Air Force (FAU) used 25 P-51D Mustangs from 1950 to 1960—some were subsequently sold to Bolivia.

P-51s and civil aviation

Many P-51s were sold as surplus after the war, often for as little as $1,500. Some were sold to former wartime fliers or other aficionados for personal use, while others were modified for air racing.

One of the most significant Mustangs involved in air racing was a surplus P-51C-10-NT (44-10947) purchased by Paul Mantz
Paul Mantz
Albert Paul Mantz was a noted air racing pilot, movie stunt pilot and consultant from the late 1930s until his death in the mid-1960s. He gained fame on two stages: Hollywood and in air races.-Early years:...

, a film stunt pilot. The aircraft was modified by creating a "wet wing", sealing the wing to create a giant fuel tank in each wing, which eliminated the need for fuel stops or drag-inducing drop tanks. This Mustang, called Blaze of Noon, came in first in the 1946 and 1947 Bendix Air Races, second in the 1948 Bendix, and third in the 1949 Bendix. He also set a U.S. coast-to-coast record in 1947. The Mantz Mustang was sold to Charles F. Blair Jr
Charles F. Blair Jr
Charles F. Blair, Jr. was a United States Air Force Brigadier General, United States Navy aviator Captain, a test pilot, an airline pilot, and airline owner. He died in a Grumman Goose seaplane crash in the Caribbean....

 (future husband of Maureen O'Hara
Maureen O'Hara
Maureen O'Hara is an Irish film actress and singer. The famously red-headed O'Hara has been noted for playing fiercely passionate heroines with a highly sensible attitude. She often worked with director John Ford and longtime friend John Wayne...

) and re-named Excalibur III. Blair used it to set a New York-to-London (c. 3,460 mi/5,568 km) record in 1951: 7 hr 48 min from takeoff at Idlewild to overhead London Airport. Later that same year, he flew from Norway to Fairbanks, Alaska, via the North Pole (c. 3,130 mi/5,037 km), proving that navigation via sun sights was possible over the magnetic north pole region. For this feat, he was awarded the Harmon Trophy
Harmon Trophy
The Harmon Trophy is a set of three international trophies, to be awarded annually to the world's outstanding aviator, aviatrix , and aeronaut...

, and the Air Force was forced to change its thoughts on a possible Soviet air strike from the north. This Mustang now resides in the National Air and Space Museum
National Air and Space Museum
The National Air and Space Museum of the Smithsonian Institution holds the largest collection of historic aircraft and spacecraft in the world. It was established in 1976. Located in Washington, D.C., United States, it is a center for research into the history and science of aviation and...

 at Steven F. Udvar-Hazy Center
Steven F. Udvar-Hazy Center
The Steven F. Udvar-Hazy Center is the Smithsonian National Air and Space Museum 's annex at Washington Dulles International Airport in the Chantilly area of Fairfax County, Virginia, United States....

.

The most prominent firm to convert Mustangs to civilian use was Trans-Florida Aviation, later renamed Cavalier Aircraft Corporation, which produced the Cavalier Mustang
Cavalier Mustang
|-See also:-Bibliography:* Darling, Kev. P-51 Mustang . Shrewsbury, UK: Airlife, 2002. ISBN 1-84037-357-1.* O'Leary, Michael. Mustangs: North American Aviation's P-51: Past, Present & Future, Warbirds International, Summer 2007....

. Modifications included a taller tailfin and wingtip tanks. A number of conversions included a Cavalier Mustang specialty: a "tight" second seat added in the space formerly occupied by the military radio and fuselage fuel tank.

In 1958, 78 surviving RCAF Mustangs were retired from service's inventory and were ferried from their varied storage locations to Canastota, New York where the American buyers had been located. These aircraft make up a large percentage of the aircraft presently flying worldwide.

In the late 1960s and early 1970s, when the United States Department of Defense
United States Department of Defense
The United States Department of Defense is the U.S...

 wished to supply aircraft to South American countries and later Indonesia
Indonesia
Indonesia , officially the Republic of Indonesia , is a country in Southeast Asia and Oceania. Indonesia is an archipelago comprising approximately 13,000 islands. It has 33 provinces with over 238 million people, and is the world's fourth most populous country. Indonesia is a republic, with an...

 for close air support
Air Support
Air Support is a 1992 computer game for the Amiga and Atari ST. It is a top-down strategy game, with a first-person mode available for special missions. The game takes place during a retrofuturistic 21st century where all wars are fought in virtual reality. The game was given mostly positive...

 and counter insurgency
Counter insurgency
A counter-insurgency or counterinsurgency involves actions taken by the recognized government of a nation to contain or quell an insurgency taken up against it...

, it turned to Cavalier to return some of their civilian conversions back to updated military specifications.

In the 21st century a P-51 can command a price of more than $1 million, even for only partially restored aircraft. According to the FAA there are 204 privately owned P-51s in the U.S. Most of which are still flying, often associated with organizations such as the Commemorative Air Force
Commemorative Air Force
The Commemorative Air Force , formerly known as the Confederate Air Force, is a Texas-based non-profit organization dedicated to preserving and showing historical aircraft at airshows primarily throughout the U.S. and Canada...

 (formerly the Confederate Air Force).

Production

Source: U.S. Military Aircraft Designations and Serials since 1909
  • NA.73X Prototype: One built
  • P-51: 150 built
  • P-51A: 310 built at Inglewood
    Inglewood, California
    Inglewood is a city in southwestern Los Angeles County, California, southwest of downtown Los Angeles. It was incorporated on February 14, 1908. Its population stood at 109,673 as of the 2010 Census...

    , California
    California
    California is a state located on the West Coast of the United States. It is by far the most populous U.S. state, and the third-largest by land area...

  • P-51B: 1,988 built at Inglewood
  • P-51C: 1,750 built at Dallas
    Dallas, Texas
    Dallas is the third-largest city in Texas and the ninth-largest in the United States. The Dallas-Fort Worth Metroplex is the largest metropolitan area in the South and fourth-largest metropolitan area in the United States...

    , Texas
    Texas
    Texas is the second largest U.S. state by both area and population, and the largest state by area in the contiguous United States.The name, based on the Caddo word "Tejas" meaning "friends" or "allies", was applied by the Spanish to the Caddo themselves and to the region of their settlement in...

  • P-51D: A total of 8,156 were built: 6,502 at Inglewood, 1,454 at Dallas and 200 by CAC at Fisherman's Bend, Australia
  • XP-51F: Three built
  • XP-51G: Two built
  • P-51H: 555 built at Inglewood
  • XP-51J: Two built

  • P-51K: 1,500 built
  • P-51L: None built — cancelled
  • P-51M: One built at Dallas
  • Mustang Mk I: 620 built
  • Mustang Mk III: 852 built
  • Mustang Mk IV: 281 built
  • Mustang Mk IVA: 595 built


Total number built: 16,766 (most numerous American fighter aircraft)

Scale replicas

The P-51 has been the subject of numerous scale flying replicas; aside from ever-popular R/C-controlled aircraft, several kitplane manufacturers offer ½, ⅔, and ¾-scale replicas capable of comfortably seating one (or even two) and offering high performance combined with more forgiving flight characteristics. Such aircraft include the Titan T-51 Mustang
Titan T-51 Mustang
|-References:**...

, W.A.R. P-51 Mustang
W.A.R. P-51 Mustang
|-See also:-External links:* *...

, Linn Mini Mustang
Linn Mini Mustang
|-See also:...

, Jurca Mustang, Thunder Mustang
Thunder Mustang
The Thunder Mustang is a modern replica of the P-51 Mustang and has joined the ranks of the high performance P-51 kits alongside the all-aluminum Stewart S-51D and the full-scale, turbine powered Cameron and Sons P-51....

, and Loehle 5151 Mustang
Loehle 5151 Mustang
|-See also:-External links:**...

.

P-51D Mustang

P-51H Mustang

Notable appearances in media

  • Battle Hymn
    Battle Hymn (film)
    Battle Hymn is a Universal Studios feature film starring Rock Hudson as Colonel Dean E. Hess, a real-life United States Air Force fighter pilot in the Korean War. Hess's autobiography of the same name was published concurrently with the release of the film. He donated his profits from the film and...

    (1956) is based on the real-life experiences of Lt Col Dean E. Hess
    Dean Hess
    Dean E. Hess was an American minister and United States Air Force colonel who was involved in the so-called "Kiddy Car Airlift," the documented rescue of 950 orphans and 80 orphanage staff from the path of the Chinese advance during the Korean War on December 20, 1950...

    , USAF (played by Rock Hudson
    Rock Hudson
    Roy Harold Scherer, Jr., later Roy Harold Fitzgerald , known professionally as Rock Hudson, was an American film and television actor, recognized as a romantic leading man during the 1950s and 1960s, most notably in several romantic comedies with Doris Day.Hudson was voted "Star of the Year",...

    ) and his cadre of U.S. Air Force instructors in the early days of the Korean War, training the pilots of the Republic of Korea Air Force and leading them in their baptism of fire in F-51D/F-51Ks.
  • The Tuskegee Airmen
    The Tuskegee Airmen
    The Tuskegee Airmen is a 1995 HBO television movie based on the exploits of an actual groundbreaking unit, the first African American combat pilots in the United States Army Air Force, that fought in World War II.-Plot:...

    (1995), the story of how a group of African-American pilots overcame racist opposition to become one of the finest U.S. fighter groups in World War II, flying P-51s, although the 99th Squadron would have used P-40 and P-39 during their North African stint.
  • Red Tail Reborn
    Red Tail Reborn
    Red Tail Reborn is a 2007 historical documentary film by Adam White about the Commemorative Air Force's Red Tail Project. The project involves the restoration, exhibition and maintenance of a World War II P-51 Mustang flown by the United States Air Force 332d Fighter Group. The exhibition of this...

    (2007), the story behind the restoration of a flying memorial plane.


See also

External links

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