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U.S. 11th Airborne Division

U.S. 11th Airborne Division

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Knollwood Maneuver


The 11th Airborne, as the attacking force, was assigned the objective of capturing Knollwood Army Auxiliary Airfield
Moore County Airport (North Carolina)
Moore County Airport is a public airport located 3 miles north of Southern Pines and 5 miles northeast of Pinehurst, in Moore County, North Carolina, USA. The airport covers and has one runway, in the past it had a grass runway...

 near Fort Bragg
Fort Bragg (North Carolina)
Fort Bragg is a major United States Army installation, in Cumberland and Hoke counties, North Carolina, U.S., mostly in Fayetteville but also partly in the town of Spring Lake. It was also a census-designated place in the 2010 census and had a population of 39,457. The fort is named for Confederate...

 in North Carolina
North Carolina
North Carolina is a state located in the southeastern United States. The state borders South Carolina and Georgia to the south, Tennessee to the west and Virginia to the north. North Carolina contains 100 counties. Its capital is Raleigh, and its largest city is Charlotte...

. The force defending the airfield and its environs was a combat team composed of elements of the 17th Airborne Division and a battalion from the 541st Parachute Infantry Regiment
541st Parachute Infantry Regiment (United States)
The 541st Parachute Infantry Regiment was a regiment in the United States Army during World War II. While never to see combat the unit, was composed of highly trained and highly educated troopers...

. The entire operation was observed by Army Ground Forces
Army Ground Forces
The Army Ground Forces were one of the three autonomous components of the Army of the United States during World War II, the others being the Army Air Forces and Army Service Forces. Throughout their existence, Army Ground Forces were the largest training organization ever established in the United...

 commander Lt. Gen. McNair, who would ultimately have a significant say in deciding the fate of the parachute infantry divisions.

The Knollwood Maneuver took place on the night of 7 December 1943, with the 11th Airborne Division being airlifted to thirteen separate objectives by 200 C-47 Skytrain
C-47 Skytrain
The Douglas C-47 Skytrain or Dakota is a military transport aircraft that was developed from the Douglas DC-3 airliner. It was used extensively by the Allies during World War II and remained in front line operations through the 1950s with a few remaining in operation to this day.-Design and...

 transport aircraft and 234 Waco CG-4A gliders. The transport aircraft were divided into four groups, two of which carried paratroopers while the other two towed gliders. Each group took off from a different airfield in the Carolinas. The four groups deployed a total of 4,800 troops in the first wave. Eighty-five percent were delivered to their targets without navigational error, and the airborne troops seized the Knollwood Army Auxiliary Airfield and secured the landing area for the rest of the division before daylight. With its initial objectives taken, the 11th Airborne Division then launched a coordinated ground attack against a reinforced infantry regiment and conducted several aerial resupply and casualty evacuation missions in coordination with United States Army Air Force transport aircraft. The exercise was judged by observers to be a great success. McNair, pleased by its results, attributed this success to the great improvements in airborne training that had been implemented in the months following Operation Husky. As a result of the Knollwood Maneuver, division-sized airborne forces were deemed to be feasible, and Eisenhower permitted their retention.

Leyte



Following the Knollwood Maneuver the 11th Airborne remained in reserve until January 1944, when it was moved by train from Camp Mackall to Camp Polk
Fort Polk
Fort Polk is a United States Army installation located in Vernon Parish, approximately 7 miles east of Leesville, Louisiana and 20 miles north of DeRidder, Louisiana....

 in Louisiana
Louisiana
Louisiana is a state located in the southern region of the United States of America. Its capital is Baton Rouge and largest city is New Orleans. Louisiana is the only state in the U.S. with political subdivisions termed parishes, which are local governments equivalent to counties...

. After four weeks of final preparation for its combat role, in April the division was moved to Camp Stoneman, California, and then transferred to Milne Bay
Milne Bay
Milne Bay is a large bay in Milne Bay Province, southeastern Papua New Guinea. The bay is named after Sir Alexander Milne.The area was a site of the Battle of Milne Bay in 1942....

, Papua New Guinea, between 25 May and 11 June. From June to September the division underwent acclimatization and continued its airborne training, conducting parachute drops in the New Guinea jungle and around the airfield in Dobodura. On 11 November the division boarded a convoy of naval transports and was escorted to Leyte
Leyte
Leyte is a province of the Philippines located in the Eastern Visayas region. Its capital is Tacloban City and occupies the northern three-quarters of the Leyte Island. Leyte is located west of Samar Island, north of Southern Leyte and south of Biliran...

 in the Philippines
Philippines
The Philippines , officially known as the Republic of the Philippines , is a country in Southeast Asia in the western Pacific Ocean. To its north across the Luzon Strait lies Taiwan. West across the South China Sea sits Vietnam...

, arriving on 18 November. Four days later it was attached to XXIV Corps and committed to combat, but operating as an infantry division rather than in an airborne capacity. The 11th Airborne was ordered to relieve the 7th Infantry Division stationed in the Burauen-La Paz-Bugho area, engage and destroy all Japanese forces in its operational area, and protect XXIV Corps rear-area supply dumps and airfields.

Maj. Gen. Swing ordered the 187th Glider Infantry Regiment (GIR) to guard the rear installations of XXIV Corps, while the 188th GIR was to secure the division's rear and conduct aggressive patrols to eliminate any enemy troops in the area. The 511th Parachute Infantry Regiment (PIR) was assigned the task of destroying all Japanese formations in the division's operational area, which it began on 28 November when it relieved the 7th Infantry. The 511th PIR advanced overland with two battalions abreast and the third in reserve, but progress proved slow in the face of fierce Japanese resistance, a lack of mapped trails, and heavy rainfall (with more than twenty-three inches (60 cm) falling in November alone). As the advance continued resupply became progressively more difficult; the division resorted to using large numbers of Piper Cub aircraft to drop food and ammunition. Several attempts were made to improve the rate of advance, such as dropping platoons of the 187th GIR from Piper Cubs in front of the 511th PIR to reconnoiter, and using C-47 transport aircraft to drop artillery pieces to the regiment's location when other forms of transport, such as mule
Mule
A mule is the offspring of a male donkey and a female horse. Horses and donkeys are different species, with different numbers of chromosomes. Of the two F1 hybrids between these two species, a mule is easier to obtain than a hinny...

-trains, failed.

On 6 December the Japanese tried to disrupt operations on Leyte by conducting two small-scale airborne raids. The first attempted to deploy a small number of Japanese airborne troops to occupy several key American-held airfields at Tacloban and Dulag
Dulag, Leyte
Dulag is a third-class municipality in the province of Leyte in Eastern Visayas in the Philippines. This coastal town covering 11,007 hectares of land is home to 44,143 residents...

, but failed when the three aircraft used were either shot-down, crash-landed or destroyed on the ground along with their passengers. The second, larger, raid was carried out by between twenty-nine and thirty-nine transport aircraft supported by fighters; despite heavy losses, the Japanese managed to drop a number of airborne troops around Burauen airfield, where the headquarters of 11th Airborne Division were located. Five L-5 Sentinel
L-5 Sentinel
The Stinson L-5 Sentinel was a World War II era liaison aircraft used by all branches of the U.S. military and by the British Royal Air Force. Along with the Stinson L-1 Vigilant, the L-5 was the only other American liaison aircraft of WWII that was purpose-built for military use and had no...

 reconnaissance aircraft and one C-47 transport were destroyed, but the raiders were eliminated by an ad hoc combat group of artillerymen, engineers and support troops led by Maj. Gen. Swing.

The 511th PIR was reinforced by the 2nd Battalion, 187th GIR, and continued its slow but steady progress. On 17 December it broke through the Japanese lines and arrived at the western shoreline of Leyte, linking up with elements of the 32nd Infantry Division. It was during this period that Private Elmer E. Fryar
Elmer E. Fryar
Elmer E. Fryar was a United States Army soldier and a recipient of the United States military's highest decoration—the Medal of Honor—for his actions in World War II.-Biography:...

 earned a posthumous Medal of Honor
Medal of Honor
The Medal of Honor is the highest military decoration awarded by the United States government. It is bestowed by the President, in the name of Congress, upon members of the United States Armed Forces who distinguish themselves through "conspicuous gallantry and intrepidity at the risk of his or her...

 when he helped to repel a counterattack, personally killing twenty-seven Japanese soldiers before being mortally wounded by a sniper
Sniper
A sniper is a marksman who shoots targets from concealed positions or distances exceeding the capabilities of regular personnel. Snipers typically have specialized training and distinct high-precision rifles....

. The regiment was ordered to set up temporary defensive positions before being relieved on 25 December by the 1st Batt., 187th GIR, and the 2nd Batt., 188th GIR, who would themselves incur considerable casualties against a heavily dug-in enemy. The 511th PIR was reassembled at its original base-camp in Leyte on 15 January 1945.

Luzon



On 22 January the division was placed on alert for an operation on the island of Luzon
Luzon
Luzon is the largest island in the Philippines. It is located in the northernmost region of the archipelago, and is also the name for one of the three primary island groups in the country centered on the Island of Luzon...

, to the north of Leyte. Five days later the 187th and 188th Glider Infantry Regiments were embarked for Luzon by sea, while the 511th Parachute Infantry Regiment flew by C-46 Commando
C-46 Commando
The Curtiss-Wright C-46 Commando was a transport aircraft originally derived from a commercial high-altitude airliner design. It was instead used as a military transport during World War II by the United States Army Air Forces as well as the U.S. Navy/Marine Corps under the designation R5C...

 transport aircraft to Mindoro
Mindoro
Mindoro is the seventh-largest island in the Philippines. It is located off the coast of Luzon, and northeast of Palawan. The southern coast of Mindoro forms the northeastern extremum of the Sulu Sea.-History:...

. At dawn on 31 January the 188th GIR led an amphibious assault near Nasugbu, in southern Luzon. Supported by a short naval barrage, A-20 Havoc light bombers and P-38 Lightning
P-38 Lightning
The Lockheed P-38 Lightning was a World War II American fighter aircraft built by Lockheed. Developed to a United States Army Air Corps requirement, the P-38 had distinctive twin booms and a single, central nacelle containing the cockpit and armament...

 fighter aircraft, a beach-head was established in the face of light Japanese resistance. The regiment moved rapidly to secure Nasugbu, after which its 1st Battalion advanced up the island's arterial Highway 17 to deny the Japanese time to establish defenses further inland. The 2nd Battalion moved south, crossing the River Lian and securing the division's right flank. By 10:30 elements of the 188th had pushed deep into southern Luzon, creating the space for the 187th GIR to come ashore. The 188th's 2nd Battalion was relieved and the regiment continued its advance, reaching the River Palico by 14:30 and securing a vital bridge before it could be destroyed by Japanese combat engineer
Sapper
A sapper, pioneer or combat engineer is a combatant soldier who performs a wide variety of combat engineering duties, typically including, but not limited to, bridge-building, laying or clearing minefields, demolitions, field defences, general construction and building, as well as road and airfield...

s.


Following Highway 17 to Tumalin, the regiment began to encounter heavier Japanese resistance. At midnight the 187th took over the lead and the two glider infantry regiments rested briefly before tackling the main Japanese defensive lines. These consisted of trenches linked to bunkers and fortified caves, and were manned by several hundred infantry with numerous artillery pieces in support. At 09:00 on 1 February the glider infantry launched their assault, and by midday had managed to break through the first Japanese position; they spent the rest of the day conducting mopping up operations. On the morning of 2 February the second line was breached, and by midnight the 188th had broken a third. The divisional reconnaissance platoon was now in the vicinity of Tagaytay Ridge, the intended site of the 511th Parachute Infantry Regiment's first combat drop.

The 511th's airborne operation had originally been scheduled for 2 February, but with Major General Swing's insistence that the drop was only to go ahead if his ground forces were in range to offer support, the dogged Japanese resistance encountered delayed the operation. With only forty-eight C-47 Skytrain transport aircraft available, the 511th was forced to deploy in three waves. The regimental staff, the 2nd Battalion and half of the 3rd Battalion would drop first, the rest of the regiment would arrive in the second lift, and the 457th Parachute Field Artillery Battalion would drop in the third.

At 03:00 on 3 February the troops of the first lift entered their transport planes, and at 07:00 the first transports left Mindoro. Protected by an escort of P-61 Black Widow
P-61 Black Widow
The Northrop P-61 Black Widow was the first operational U.S. military aircraft designed specifically for night interception of aircraft, and was the first aircraft specifically designed to use radar. It was an all-metal, twin-engine, twin-boom design developed during World War II...

 night fighter
Night fighter
A night fighter is a fighter aircraft adapted for use at night or in other times of bad visibility...

s, on arriving over Luzon they followed Highway 17 to Tagaytay Ridge. The ridge itself was an open space some two thousand yards (1,829 m) long and four thousand yards (3,657 m) wide, plowed in places, and had been largely cleared of Japanese troops by local Filipino guerrillas. At 08:15 the first echelon of the first lift, approximately 345 men, successfully parachuted into the drop zone. The second echelon, consisting of approximately 570 men, were dropped prematurely and landed about eight thousand yards (7,315 m) to the east. The next lift also encountered problems, with 425 men dropping correctly but another 1,325 dropping early due to pilot error and poor jump discipline. However, the entire regiment was assembled within five hours of the first landings. After overcoming minor Japanese resistance, by 15:00 the 511th had made contact with the 188th and 187th, and the entire division was once again assembled as a single formation. The ridge having been cleared of its remaining defenders, the division began to advance towards Manila
Manila
Manila is the capital of the Philippines. It is one of the sixteen cities forming Metro Manila.Manila is located on the eastern shores of Manila Bay and is bordered by Navotas and Caloocan to the north, Quezon City to the northeast, San Juan and Mandaluyong to the east, Makati on the southeast,...

, reaching the Paranaque River by 21:00. The city was protected by the Genko Line, a major Japanese defensive belt that stretched along Manila's southern edge. The line consisted of approximately 1,200 two- to three-story deep blockhouse
Blockhouse
In military science, a blockhouse is a small, isolated fort in the form of a single building. It serves as a defensive strong point against any enemy that does not possess siege equipment or, in modern times, artillery...

s, many of which emplaced naval guns or large-caliber mortars. Entrenched heavy anti-aircraft weapons, machine-gun nests and booby-traps made of naval bombs completed the defenses, which were manned by around 6,000 Japanese soldiers.

The 11th Airborne Division was ordered to breach the Genko Line and drive into Manila, where it would link up with other American forces attacking the city from the north. All three regiments were committed to the assault. Spearheading the division's attack on 5 February, the 511th overcame fierce resistance and broke the crust of the Japanese position, but was soon relieved by the 188th. As the glider regiment took up the push westwards in the face of heavy opposition, the 511th changed their axis of advance and attempted to move into the city from the north. By 11 February, the division had penetrated as far as Nichols Field
Nichols Field
Nichols Field was a U.S. military airfield located south of Manila in Pasay City and Parañaque City, Metro Manila, Luzon, the Philippines. During the World War II era, it was the location of the Far East Air Force's U.S. 20th Air Base Group. Also, based here was Troop F of the U.S. 26th Cavalry...

, an airfield that formed the center of the Genko Line. This was heavily fortified with a number of entrenched naval guns and a series of bunkers; after a short artillery bombardment on the morning of 12 February, the 187th's 2nd Battalion attacked the airfield's north-west corner while the 1st Battalion and the entire 188th regiment moved in from the south and south-eastern corners. This pincer movement succeeded in taking the airfield and, despite a local counter-attack, by nightfall the position was secured. The following day the division thrust towards Fort McKinley
Fort McKinley
Several places have been named Fort McKinley* Fort William McKinley * Fort McKinley, Maine* Fort McKinley, Ohio--------------------------------------------------------------------------------...

, the headquarters of Rear Admiral
Rear Admiral
Rear admiral is a naval commissioned officer rank above that of a commodore and captain, and below that of a vice admiral. It is generally regarded as the lowest of the "admiral" ranks, which are also sometimes referred to as "flag officers" or "flag ranks"...

 Iwabuchi, commander of the Japanese defenders on Luzon. It was during this advance that Private First Class
Private First Class
Private First Class is a military rank held by junior enlisted persons.- Singapore :The rank of Private First Class in the Singapore Armed Forces lies between the ranks of Private and Lance-Corporal . It is usually held by conscript soldiers midway through their national service term...

 Manuel Perez Jr.
Manuel Perez Jr.
Private First Class Manuel Perez, Jr. born in Oklahoma City, Oklahoma, was a United States Army soldier who posthumously received the Medal of Honor, the United States' highest military decoration, for his actions in Battle of Luzon during the Philippines campaign of World War II.-Early...

 neutralized several Japanese bunkers which were impeding the division's progress, capturing one single-handedly and killing eighteen Japanese soldiers. PFC Perez was posthumously awarded the Medal of Honor.

On 15 February, the 1st Battalion of the 187th, alongside other American units, launched an attack on Mabato Point. This was an extremely heavily fortified position featuring the same defensive measures as the Genko Line, and it would take six days of hard fighting, multiple airstrikes, and the frequent use of napalm
Napalm
Napalm is a thickening/gelling agent generally mixed with gasoline or a similar fuel for use in an incendiary device, primarily as an anti-personnel weapon...

 and heavy artillery, before the point was secured. Meanwhile, having taken heavy casualties on its approach to Fort McKinley—particularly when the Japanese detonated a quantity of buried naval depth charge
Depth charge
A depth charge is an anti-submarine warfare weapon intended to destroy or cripple a target submarine by the shock of exploding near it. Most use explosives and a fuze set to go off at a preselected depth in the ocean. Depth charges can be dropped by either surface ships, patrol aircraft, or from...

s—on 17 February the rest of the 11th Airborne Division assaulted the fort. The 511th led the break-in, and by 18 February the area had been cleared of its defenders. Sporadic fighting continued in Manilla until 3 March, when all organized Japanese resistance ended.

Raid at Los Baños




A large number of civilian prisoners had been detained by the Japanese on Luzon, mostly in internment camps scattered throughout the island. The largest of these was located on the campus of the Agricultural College of the Philippines
University of the Philippines, Los Baños
The University of the Philippines Los Baños is a public university located in the towns of Los Baños and Bay in the province of Laguna, some 64 kilometers southeast of Manila...

 at Los Baños
Los Baños, Laguna
The Nature and Science City of Los Baños is a 1st class urban city in the province of Laguna, Philippines. According to the latest census, it has a population of 98,631 inhabitants in 17,030 households...

, some forty miles (64 km) south-east of Manila. General
General of the Army (United States)
General of the Army is a five-star general officer and is the second highest possible rank in the United States Army. A special rank of General of the Armies, which ranks above General of the Army, does exist but has only been conferred twice in the history of the Army...

 Douglas MacArthur
Douglas MacArthur
General of the Army Douglas MacArthur was an American general and field marshal of the Philippine Army. He was a Chief of Staff of the United States Army during the 1930s and played a prominent role in the Pacific theater during World War II. He received the Medal of Honor for his service in the...

 had tasked the 11th Airborne Division with rescuing the Los Baños internees on 3 February, but the division's ongoing combat operations around the Genko Line left it unable to divert any resources at that time. All that could be accomplished during February was to gather information, primarily through liaison with the guerilla groups operating in Southern Luzon and around Los Baños. Maj. Gen. Swing and his command staff were briefed daily by the officer working with the guerilla groups, Major Vanderpool. From the guerillas and a few civilians that had escaped the camp, Vanderpool established that it was surrounded by two barbed-wire fences approximately six feet tall. Several guard towers and bunkers dotted its perimeter, each containing at least two guards. Prisoners left each morning under armed guard to gather food supplies and firewood from a nearby town. Vanderpool was informed that the camp's population consisted of American civilians in three distinct groups: Protestant missionaries and their families; Roman Catholic nuns and priests; and professional workers such as doctors and engineers, and their families. The latter group included several hundred women and children. While all the inmates appeared to be in good health, many had become weak from food rationing.

On 20 February, Maj. Gen. Swing was finally able to release sufficient troops for a raid on the Los Baños camp, and a four-phase plan was devised by Major Vanderpool and the divisional staff officers. The divisional reconnaissance platoon would travel across a nearby lake and move to the outskirts of the camp, securing a large adjacent field as the drop zone for a company of paratroopers. Having landed, the paratroopers would eliminate Japanese resistance in the area, secure the camp, and prepare for its evacuation. Fifty-four amphibious Amtracs
Landing Vehicle Tracked
The Landing Vehicle Tracked was a class of amphibious vehicles introduced by the United States Navy, Marine Corps and Army during World War II. Originally intended solely as cargo carriers for ship to shore operations, they rapidly evolved into assault troop and fire support vehicles as well...

 would transport two additional companies of paratroopers to the lake shore, where a beachhead would be established while the Amtracs continued to the camp to evacuate its occupants. Simultaneously, a task force consisting of a reinforced infantry battalion, two battalions of heavy artillery and a tank destroyer
Tank destroyer
A tank destroyer is a type of armored fighting vehicle armed with a gun or missile launcher, and is designed specifically to engage enemy armored vehicles...

 battalion would advance down Highway 1 towards Los Baños to interdict any Japanese attempts to interfere.


Assisted by a group of guerrillas, on the night of 21 February the divisional reconnaissance platoon made their way to the lake and collected ten canoes. Despite navigational difficulties, the platoon came ashore near Los Baños at 02:00 the following morning, and after securing the paratroopers' drop zone, concealed themselves in the jungle near the camp. During the afternoon B Company of the 1st Battalion, 511th PIR was transferred to the airfield from which they would be deployed, while the rest of the battalion rendezvoused with the Amtrac convoy. At 07:00 on the morning of 23 February, B Company took off in ten C-47 Skytrain transport aircraft, arriving over their drop zone shortly afterwards. As the first paratroopers landed, the reconnaissance platoon and the supporting guerilla fighters opened fire on the camp's defences, using Bazooka
Bazooka
Bazooka is the common name for a man-portable recoilless rocket antitank weapon, widely fielded by the U.S. Army. Also referred to as the "Stovepipe", the innovative bazooka was amongst the first-generation of rocket propelled anti-tank weapons used in infantry combat...

 rounds to penetrate the concrete pillboxes, and then entered the camp to engage its garrison. The paratroopers soon joined the battle, and by 07:30 the Japanese guards had been overcome and the internees were being rounded up and readied for evacuation. At the lakeshore the 511th's other two companies had secured their beachhead, and the convoy of Amtracs reached the camp without incident. Priority during loading was given to the women, children and wounded; some of the able-bodied men walked alongside the Amtracs as they returned to the beach. The first evacuation convoy left the camp at approximately 10:00, with B Company, the reconnaissance platoon and the guerrillas remaining behind to provide a rearguard. By 11:30 all of the civilians had been evacuated, and at 13:00 the Amtrac convoy returned for the rearguard, with the last paratroopers leaving the beach at approximately 15:00. Meanwhile on Highway 1, the taskforce that had been deployed to protect the operation met heavy Japanese resistance and suffered several casualties, but was able to block Japanese forces that advanced on the camp, before retreating back to American lines. The raid had been a complete success, liberating 2,147 civilians.

Southern Luzon and Aparri


On the day that the Los Baños internees were freed, the headquarters of Sixth United States Army assigned the 11th Airborne Division the task of destroying all Japanese formations in southern Luzon, south of Manila. The bulk of the division moved south the following day, with the 187th GIR and the 511th PIR advancing abreast. The 188th GIR was detached from the main advance by Maj. Gen. Swing; it was to eliminate all Japanese units still operating in the Pico de Loro hills along the southern shore of Manila Bay
Manila Bay
Manila Bay is a natural harbor which serves the Port of Manila , in the Philippines.The bay is considered to be one of the best natural harbors in Southeast Asia and one of the finest in the world...

. These forces belonged to the 80,000-strong Shimbu Group, one of three groups of the Japanese Fourteenth Area Army under General Tomoyuki Yamashita
Tomoyuki Yamashita
General was a general of the Japanese Imperial Army during World War II. He was most famous for conquering the British colonies of Malaya and Singapore, earning the nickname "The Tiger of Malaya".- Biography :...

. It would take until the end of April for the 11th Airborne Division—often acting in conjunction with Filipino guerillas and elements of the 1st Cavalry Division—to subdue the Shimbu Group. Conducting combat operations was extremely difficult in the mountainous terrain, and many Japanese units elected to fight to the death rather than surrender. However, all organized resistance in southern Luzon ended on 1 May, when the division captured Mount Malepunyo near the city of Lipa. The 11th Airborne established a base centered around the former Japanese airstrip on the outskirts of Lipa, the runway of which was lengthened by the 127th Engineering Battalion to accommodate C-47 transport aircraft. Once the engineering work was completed, the division's combat troops participated in several refresher-training courses.

The 11th Airborne's next operation took place on 23 June in the province of Aparri in northern Luzon. By this time the only Japanese forces remaining on the island were positioned to the far north and belonged to the 52,000-strong Shobu Group. This last of General Yamashita's three groups proved to be the most tenacious, forcing Lieutenant-General Walter Krueger
Walter Krueger
Walter Krueger was an American soldier of German descent and General in the first half of the 20th century. He is best known for his command of the Sixth United States Army in the South West Pacific Area during World War II...

, commander of the Sixth United States Army, to commit four infantry divisions, an armored task force, and a large band of guerillas. While these forces pinned down the Japanese, the 37th Infantry Division began an advance northwards, defeating a weaker formation and encircling the main Japanese force. To ensure the success of the 37th's drive, Krueger called for an airborne force to land near Aparri and move southwards to meet the advancing 37th.

The 11th Airborne Division was to drop a battalion-sized combat team on Camalaniugan Airfield, approximately ten miles (16 km) south of Aparri. It would then advance southwards, eliminating all Japanese resistance, until it linked up with the leading elements of the 37th Infantry Division. To accomplish this Maj. Gen. Swing formed a special unit–Gypsy Task Force–comprising the 1st Battalion of the 511th Parachute Infantry Regiment, G and I Companies of the regiment's 2nd Battalion, an artillery battery from the 457th Parachute Field Artillery Battalion, and a platoon of engineers and miscellaneous signal and medical detachments. Gypsy Task Force would be transported by fifty-four C-47 Skytrain and thirteen C-46 Commando
C-46 Commando
The Curtiss-Wright C-46 Commando was a transport aircraft originally derived from a commercial high-altitude airliner design. It was instead used as a military transport during World War II by the United States Army Air Forces as well as the U.S. Navy/Marine Corps under the designation R5C...

 aircraft, as well as six Waco CG-4A Gliders
Waco CG-4
The Waco CG-4 was the most widely used United States troop/cargo military glider of World War II. It was designated the CG-4 by the United States Army Air Forces, and named Hadrian in British military service....

 which would land jeep
Jeep
Jeep is an automobile marque of Chrysler . The first Willys Jeeps were produced in 1941 with the first civilian models in 1945, making it the oldest off-road vehicle and sport utility vehicle brand. It inspired a number of other light utility vehicles, such as the Land Rover which is the second...

s and supplies for the task force. On 21 June, a detachment of pathfinders
Pathfinders (military)
A pathfinder is a paratrooper who is inserted or dropped into place in order to set up and operate drop zones, pickup zones, and helicopter landing sites for airborne operations, air resupply operations, or other air operations in support of the ground unit commander...

 from the division was flown in to secure Camalaniugan Airfield, and two days later the transport aircraft carrying the troops of Gypsy Task Force were escorted by fighters to the area. At 09:00 the pathfinder detachment set off colored smoke to mark the drop-zone, but fierce winds and uneven ground around the airfield proved hazardous to the parachutists, causing two deaths and seventy injuries during the drop. Despite these casualties the force was rapidly concentrated, and began its advance southwards. Japanese resistance was stiff, forcing the airborne troops to rely on flamethrower
Flamethrower
A flamethrower is a mechanical device designed to project a long controllable stream of fire.Some flamethrowers project a stream of ignited flammable liquid; some project a long gas flame. Most military flamethrowers use liquids, but commercial flamethrowers tend to use high-pressure propane and...

s to eliminate bunkers and fortifications along their route. After three days of fighting and having eliminated a significant portion of Shobu Group, the task force encountered the lead elements of the 37th Infantry Division. Although Shobu Group would continue its resistance until September, its encirclement marked the 11th Airborne Division's final combat operation of the war.

Occupation of Japan




General MacArthur made plans to use the 11th Airborne Division in the invasion of Japan
Operation Downfall
Operation Downfall was the Allied plan for the invasion of Japan near the end of World War II. The operation was cancelled when Japan surrendered after the atomic bombing of Hiroshima and Nagasaki and the Soviet Union's declaration of war against Japan. The operation had two parts: Operation...

; it was to remain as Sixth Army's operational reserve, to be committed if required. However, with the end of hostilities in the Pacific Theater
Pacific Theater of Operations
The Pacific Theater of Operations was the World War II area of military activity in the Pacific Ocean and the countries bordering it, a geographic scope that reflected the operational and administrative command structures of the American forces during that period...

 shortly after the detonation of two nuclear weapons over Hiroshima and Nagasaki, the division was instead selected by General MacArthur to lead the American forces that would occupy Japan. The divisional staff received orders to this effect on 11 August 1945, and the division was transported to Okinawa on 12 August; an operation that involved 99 B-24 Liberator
B-24 Liberator
The Consolidated B-24 Liberator was an American heavy bomber, designed by Consolidated Aircraft of San Diego, California. It was known within the company as the Model 32, and a small number of early models were sold under the name LB-30, for Land Bomber...

 bombers, 350 C-46 Commando and 150 C-47 Dakota transport aircraft to airlift 11,100 men, 120 vehicles and approximately 1.16 million pounds (530,000 kg) of equipment. The 11th Airborne remained on Okinawa for several weeks before, on 28 August, it was ordered to land at Atsugi Airfield
Naval Air Facility Atsugi
is a naval air base located in the cities of Yamato and Ayase in Kanagawa Prefecture, Japan. It is the largest United States Navy air base in the Pacific Ocean and houses the squadrons of Carrier Air Wing 5, which deploys with the aircraft carrier...

 outside of Yokohama
Yokohama
is the capital city of Kanagawa Prefecture and the second largest city in Japan by population after Tokyo and most populous municipality of Japan. It lies on Tokyo Bay, south of Tokyo, in the Kantō region of the main island of Honshu...

, on the main Japanese home island of Honshū
Honshu
is the largest island of Japan. The nation's main island, it is south of Hokkaido across the Tsugaru Strait, north of Shikoku across the Inland Sea, and northeast of Kyushu across the Kanmon Strait...

. Its instructions were to secure the surrounding area, evacuate all Japanese civilians and military personnel within a radius of three miles (5 km), and finally occupy Yokohama itself. A large number of C-54 Skymaster
C-54 Skymaster
The Douglas C-54 Skymaster was a four-engined transport aircraft used by the United States Army Air Forces and British forces in World War II and the Korean War. Besides transport of cargo, it also carried presidents, British heads of government, and military staff...

 transport aircraft were made available, with the first—carrying Swing and his divisional staff—landing at Atsugi Airfield at 06:00 on 30 August. It took a week to fully assemble the division, and by 13 September it had been joined by the 27th Infantry Division, which was airlifted into Japan at the same time. The 11th Airborne Division was later moved from Yokohama to northern Japan, and established camps along the coast of Honshu
Honshu
is the largest island of Japan. The nation's main island, it is south of Hokkaido across the Tsugaru Strait, north of Shikoku across the Inland Sea, and northeast of Kyushu across the Kanmon Strait...

 and on the island of Hokkaido
Hokkaido
, formerly known as Ezo, Yezo, Yeso, or Yesso, is Japan's second largest island; it is also the largest and northernmost of Japan's 47 prefectural-level subdivisions. The Tsugaru Strait separates Hokkaido from Honshu, although the two islands are connected by the underwater railway Seikan Tunnel...

.

Training and first inactivation


Occupation duties in Japan continued until May 1949, when the 11th Airborne was relieved and recalled to the United States. The division was transferred to Camp Campbell in Kentucky
Kentucky
The Commonwealth of Kentucky is a state located in the East Central United States of America. As classified by the United States Census Bureau, Kentucky is a Southern state, more specifically in the East South Central region. Kentucky is one of four U.S. states constituted as a commonwealth...

 and became a training formation, with several of its subordinate units inactivated including the 188th Glider Infantry Regiment. Training continued until the outbreak of 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...

 in 1950. For service in Korea, the 187th Glider Infantry Regiment—now renamed the 187th Airborne Infantry Regiment—and the 674th Airborne Field Artillery Battalion were detached from the division and re-formed as a separate Regimental Combat Team
Regimental combat team
A regimental combat team was a provisional major infantry unit of the United States Army during the World War II and the Korean War, and of the U.S. Marine Corps to the present day...

 (RCT). The 187th RCT saw two years of fighting in Korea, conducting two airborne operations as well as operating as conventional infantry. The rest of the division continued its training role, processing and training approximately thirteen thousand recalled reservists between September and December 1950 alone. The 187th RCT remained in Korea until 1 October 1953, when it was transferred to Japan for two years until being replaced by the 508th RCT. The 187th returned to the United States on 17 July 1955, but as a unit independent of its parent division.

The 11th Airborne Division was sent to Germany in early 1956 as part of Operation Gyroscope
Operation Gyroscope
Operation Gyroscope was a project started by the United States military after World War II that was active 1947-1956. The plan was to ship soldiers out of the U.S. state of California, instead of New York.- German Reconstruction :...

, to replace the 5th Infantry Division stationed in Augsburg and Munich. As the division was en route, the 187th RCT was relocated to Fort Campbell, taking over the camps that the 11th had recently vacated. In July that year the 187th, along with the 508th ARC, was transferred to the newly-reactivated 101st Airborne Division.

As the American Army began to restructure its organisation (known as the Pentomic
Pentomic
Pentomic refers to a structure for infantry divisions adopted by the U.S. Army in 1957 in response to the perceived threat posed by tactical nuclear weapons use on the battlefield....

 Concept), the battalions of the 187th were re-designated as Airborne Battle Groups. In early 1957 the 1st Airborne Battle Group, 187th Infantry transferred to Augsburg to join its former parent formation, where it was reintegrated into the 11th Airborne Division. The 2nd Airborne Battle Group, 187th Infantry remained with the 101st until 1964 while the 3rd Battalion was inactivated. However, the 11th Division was itself inactivated in Augsburg on 1 July 1958, and the 1st Airborne Battle Group was instead moved to the 24th Infantry Division.

Reactivation and final inactivation


In the early 1960s, the United States Army began to explore alternative means by which it could conduct future conflicts, and one of the many ideas from the United States Department of Defense
United States Department of Defense
The United States Department of Defense is the U.S...

 was the concept of helicopter assault
Air assault
Air assault is the movement of ground-based military forces by vertical take-off and landing aircraft—such as the helicopter—to seize and hold key terrain which has not been fully secured, and to directly engage enemy forces...

. To investigate this concept's feasibility, the 11th Airborne Division was reformed on 1 February 1963 as a test-bed formation, and renamed the 11th Air Assault Division (Test). This was done on the recommendation of the U.S. Army Tactical Mobility Requirements Board, also known as the 'Howze Board
Howze Board
Howze Board is the informal name of the Tactical Mobility Requirements Board that was created at the request of Secretary of Defense Robert McNamara to review and test new concepts integrating helicopters into the United States Army. It gave birth to idea of airmobility. It was named after its...

' after its president Lieutenant General Hamilton H. Howze
Hamilton H. Howze
Hamilton Hawkins Howze was born in West Point, New York, while his father, Major General Robert Lee Howze, an 1888 West Point graduate, was serving as Commandant of the West Point.-Early career:...

.

The 11th was reincarnated as a "light" division, capable of rapid deployment via air force or army aircraft, thereby completely recreating the organizational structure it had possessed when deactivated. Elements of its original combat units – the 187th Airborne Infantry, the 188th Airborne Infantry and the 511th Airborne Infantry – were also reformed under the new division.

For the next two years, the 11th Air Assault Division developed and refined air assault tactics and the equipment required to operate effectively in the role. The 187th and 188th tested helicopters during various exercises, ranging from command and control maneuvers to scouting, screening and aerial resupply, to assess their ability to perform as combat aircraft. However, the division was inactivated for the final time on 29 June 1965, with its personnel and equipment being merged with the 2nd Infantry Division to form the newly-raised 1st Cavalry Division (Airmobile). The colors of the 1st Cavalry Division, at that time assigned to Korea, were transferred to Fort Benning, while those of the 2nd Infantry Division were moved to Korea.


An earlier predecessor to the current Air Assault Badge
Air Assault Badge
The Air Assault Badge, pictured to the right, is awarded by the U.S. Army for successful completion of the Air Assault School, a two-week course. The course includes three phases of instruction involving U.S. Army rotary wing aircraft: combat air assault operations; rigging and slingload...

http://www.ranger25.com/original_air_assault_badge.htm, pictured on the right, was worn in the early 1960s by troops of 11th who qualified for it by making three helicopter rappels from 60 feet (18.3 m) and three from 120 feet (36.6 m). Soldiers were also required to be knowledgeable of aircraft safety procedures; familiar with aircraft orientation; proficient in hand and arm signals and combat assault operations; able to prepare, inspect and rig equipment for external sling loads; and able to lash down equipment inside helicopters. The badge was first awarded in early 1964 and was only authorized for wear by soldiers within the 11th.