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British and United States military ranks compared

British and United States military ranks compared

Overview

(Rank codes are at each side of the table.)

Not listed are U.S. warrant officers
Warrant Officer (United States)
In the United States military, a Warrant Officer is ranked as an officer above the senior-most enlisted ranks, as well as officer cadets and candidates, but below the officer grade of O-1...

. In accordance with Army Regulation (AR) 135-100, US Department of the Army Pamphlet (DA Pam) 600-11 and US Army Field Manual (FM) 22-100 (para A-3), a warrant officer is an officer who can and does command, carry out military justice actions and sits on both selection and promotion boards.
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UK and US Officer Ranks Compared


(Rank codes are at each side of the table.)
NATO
NATO
The North Atlantic Treaty Organization ); ), also called "the Atlantic Alliance", is an intergovernmental military alliance based on the North Atlantic Treaty which was signed on April 4, 1949...

 Rank code
British Army
British Army
The British Army is the land armed forces branch of the British Armed Forces. It came into being with the unification of the Kingdoms of England and Scotland into the Kingdom of Great Britain in 1707. The new British Army incorporated Regiments that had already existed in England and Scotland and...

 and Royal Marines
Royal Marines
The Royal Marines are the marine corps and amphibious infantry of the United Kingdom and, along with the Royal Navy and Royal Fleet Auxiliary, form the Naval Service. They are also the United Kingdom's specialists in amphibious warfare, including the operation of landing craft; mountain warfare;...

3
U.S. Army
United States Army
The United States Army is the branch of the United States Military responsible for land-based military operations. It is the largest and oldest established branch of the U.S. military and is one of seven uniformed services...

, USAF
United States Air Force
The United States Air Force is the aerial warfare branch of the U.S. armed forces and one of the American uniformed services. Initially part of the United States Army, the USAF was formed as a separate branch of the military on 18 September 1947 under the National Security Act of 1947 - 80 P.L....


and USMC
United States Marine Corps
The United States Marine Corps is a branch of the United States armed forces responsible for providing force projection from the sea, using the mobility of the United States Navy to rapidly deliver combined-arms task forces. It is one of seven uniformed services of the United States...

Royal Navy
Royal Navy
The Royal Navy of the United Kingdom is the oldest of HM Armed Forces . From the beginning of the 18th century until well into the 20th century, it was the most powerful navy in the world, playing a key part in establishing the British Empire as the dominant world power from 1815 until the early...

U.S. Navy and
U.S. Coast Guard
RAF
Royal Air Force
The Royal Air Force is the United Kingdom's air force, the oldest independent air force in the world. Formed on 1 April 1918, the RAF has taken a significant role in British military history ever since, playing a large part in World War II and in more recent conflicts.The RAF operates almost 1,109...

1
U.S. code7
OF-102 Field Marshal
Field Marshal (UK)
Field Marshal is the highest military rank of the United Kingdom, a five-star rank. It ranks immediately above the rank of General and is the British Army equivalent to an Admiral of the Fleet and Marshal of the Royal Air Force....

 (Army)
Captain General
Captain General Royal Marines
The Captain General Royal Marines is the ceremonial head of the Royal Marines. The current incumbent is HRH the Duke of Edinburgh.The uniform and insignia are those of a Field Marshal....

 (RM)
General of the Army
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...


General of the Air Force (no USMC equiv)
Admiral of the Fleet
Admiral of the Fleet (Royal Navy)
Admiral of the Fleet is a rank of the British Royal Navy and other navies, which equates to the NATO rank code OF-10.The rank evolved from the ancient sailing days of the Royal Navy. The fleet was divided into three divisions and each designated a colour, that of Red, White, or Blue...

Fleet Admiral (FADM) (U.S. Navy only) Marshal of the Royal Air Force
Marshal of the Royal Air Force
Marshal of the Royal Air Force is the highest rank in the Royal Air Force. In peacetime it was granted to RAF officers in the appointment of Chief of the Defence Staff, and to retired Chiefs of the Air Staff, who were promoted to it on their last day of service. Promotions to the rank have ceased...

 (MRAF)
-
OF-9 General
General (United Kingdom)
General is currently the highest peace-time rank in the British Army and Royal Marines. It is the equivalent of a 4 star rank, and is subordinate to the Army rank of Field Marshal and the Royal Marines rank of Captain General Royal Marines....

 (Gen)
General
General (United States)
In the United States Army, United States Air Force, and United States Marine Corps, general is a four-star general officer rank, with the pay grade of O-10. General ranks above lieutenant general and below General of the Army or General of the Air Force; the Marine Corps does not have an...

 (GEN/Gen/Gen)
Admiral
Admiral (United Kingdom)
Admiral is a senior rank of the Royal Navy of the United Kingdom, outranked only by the rank Admiral of the Fleet. Royal Navy officers holding the ranks of Rear Admiral, Vice Admiral and Admiral of the Fleet are sometimes considered generically to be Admirals....

 (Adm)
Admiral
Admiral (United States)
In the United States Navy, the United States Coast Guard and the United States Public Health Service Commissioned Corps, admiral is a four-star flag officer rank, with the pay grade of O-10. Admiral ranks above vice admiral and below Fleet Admiral in the Navy; the Coast Guard and the Public Health...

 (ADM)
Air Chief Marshal
Air Chief Marshal
Air Chief Marshal is a senior air officer rank which originated in and continues to be used by the Royal Air Force...

 (Air Chf Mshl)
O-10
OF-8 Lieutenant‑General
Lieutenant-General (UK)
Lieutenant-General is a senior rank in the British Army and the Royal Marines.A Lieutenant-General is superior to a Major-General but subordinate to a full General...

 (Lt Gen)
Lieutenant General
Lieutenant General (United States)
In the United States Army, the United States Marine Corps and the United States Air Force, lieutenant general is a three-star general officer rank, with the pay grade of O-9. Lieutenant general ranks above major general and below general. Lieutenant general is equivalent to the rank of vice admiral...

 (LTG/Lt Gen/LtGen)
Vice‑Admiral
Vice-Admiral of the United Kingdom
The Vice-Admiral of the United Kingdom is a now honorary office generally held by a senior Royal Navy admiral. Despite the title, the Vice-Admiral of the United Kingdom is usually a full admiral...

 (VAdm)
Vice Admiral
Vice Admiral
Vice Admiral is a naval rank equivalent to Lieutenant General in seniority. A Vice Admiral is typically senior to a Rear Admiral and junior to an Admiral. In many navies, Vice Admiral is a three star rank.-Rank Insignia:...

 (VADM)
Air Marshal
Air Marshal
Air Marshal is a 3 star air officer rank which originated in and continues to be used by the Royal Air Force. The rank is also used by the air forces of many countries which have historical British influence and it is sometimes used as the English translation of an equivalent rank in countries...

 (Air Mshl)
O-9
OF-7 Major‑General
Major General
Major General or Major-General is a military rank used in many countries. It is derived from the older rank of Sergeant Major General. A Major General is a high-ranking officer, normally subordinate to the rank of Lieutenant General and senior to the ranks of Brigadier and Brigadier General...

 (Maj Gen)
Major General
Major General
Major General or Major-General is a military rank used in many countries. It is derived from the older rank of Sergeant Major General. A Major General is a high-ranking officer, normally subordinate to the rank of Lieutenant General and senior to the ranks of Brigadier and Brigadier General...

 (MG/Maj Gen/MajGen)
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" and/or "Flag ranks"...

 (RAdm)
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" and/or "Flag ranks"...

 (Upper Half) (RADM)
Air Vice‑Marshal (AVM) O-8
OF-6 Brigadier
Brigadier
Brigadier is a military rank, the meaning of which has a considerable variation.-Officer rank:In many countries, especially those formerly part of the former British Empire, a Brigadier is either the highest field rank or most junior General appointment, nominally commanding a brigade...

 (Brig)
Brigadier General
Brigadier General
Brigadier General is the lowest ranking General Officer in some countries, usually sitting between the ranks of Colonel and Major General.The rank can be traced back to the militaries of Europe where a brigadier general, or simply a brigadier, would command a brigade in the field...

 (BG/Brig Gen/BGen)
Commodore (Cdre) 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" and/or "Flag ranks"...

 (Lower Half) (RDML)
Air Commodore
Air Commodore
Air Commodore is an air officer rank which originated in and continues to be used by the Royal Air Force...

 (Air Cdre)
O-7
OF-5 Colonel
Colonel
Colonel is a military rank of a commissioned officer, with corresponding ranks existing in almost every country in the world. It is also used in some police forces and other paramilitary rank structures...

 (Col)
Colonel
Colonel
Colonel is a military rank of a commissioned officer, with corresponding ranks existing in almost every country in the world. It is also used in some police forces and other paramilitary rank structures...

 (COL/Col/Col)
Captain
Captain (naval)
Captain is the name most often given in English-speaking navies to the rank corresponding to command of the largest ships. The NATO rank code is OF-5, equivalent to an army full colonel.The equivalent rank in many navies is Ship-of-the-Line Captain...

 (Capt)
Captain
Captain (naval)
Captain is the name most often given in English-speaking navies to the rank corresponding to command of the largest ships. The NATO rank code is OF-5, equivalent to an army full colonel.The equivalent rank in many navies is Ship-of-the-Line Captain...

 (CAPT)
Group Captain
Group Captain
Group Captain is a senior commissioned rank in the Royal Air Force and the air forces of many other Commonwealth countries. It ranks above Wing Commander and immediately below Air Commodore...

 (Gp Capt)
O-6
OF-4 Lieutenant‑Colonel
Lieutenant Colonel
Lieutenant colonel is a rank of commissioned officer in the armies and most marine forces and air forces of the world, typically ranking above a major and below a colonel. The rank of lieutenant colonel is often shortened to simply "colonel" in conversation and in unofficial correspondence...

 (Lt Col)
Lieutenant Colonel
Lieutenant Colonel
Lieutenant colonel is a rank of commissioned officer in the armies and most marine forces and air forces of the world, typically ranking above a major and below a colonel. The rank of lieutenant colonel is often shortened to simply "colonel" in conversation and in unofficial correspondence...

 (LTC/Lt Col/LtCol)
Commander
Commander
Commander is a military rank which is also sometimes used as a military title depending on the individual customs of a given military service...

 (Cdr)
Commander
Commander
Commander is a military rank which is also sometimes used as a military title depending on the individual customs of a given military service...

 (CDR)
Wing Commander
Wing Commander (rank)
Wing Commander is a commissioned rank in the Royal Air Force and the air forces of many other Commonwealth countries. It ranks above Squadron Leader and immediately below Group Captain...

 (Wg Cdr)
O-5
OF-3 Major
Major
In many European languages, the term Major is a military rank, implying seniority at one of usually various levels of rank. For example:*"General-Major" or "Major-General", denoting a senior ranking general officer....

 (Maj)
Major
Major
In many European languages, the term Major is a military rank, implying seniority at one of usually various levels of rank. For example:*"General-Major" or "Major-General", denoting a senior ranking general officer....

 (MAJ/Maj/Maj)
Lieutenant‑Commander (Lt Cdr) Lieutenant Commander
Lieutenant Commander
Lieutenant Commander is a commissioned officer rank in many navies. The rank is superior to a Lieutenant and subordinate to a Commander...

 (LCDR)
Squadron Leader
Squadron Leader
Squadron Leader is a commissioned rank in the Royal Air Force and the air forces of many countries which have historical British influence. It is also sometimes used as the English translation of an equivalent rank in countries which have a non-English air force-specific rank structure. In these...

 (Sqn Ldr)
O-4
OF-2 Captain (Capt) Captain (CPT/Capt/Capt) Lieutenant
Lieutenant
Lieutenant is a military, naval, paramilitary, fire service, emergency medical services or police officer rank....

 (Lt)
Lieutenant
Lieutenant
Lieutenant is a military, naval, paramilitary, fire service, emergency medical services or police officer rank....

 (LT)
Flight Lieutenant
Flight Lieutenant
Flight Lieutenant is a junior commissioned rank in the Royal Air Force and the air forces of many Commonwealth countries. It ranks above Flying Officer and immediately below Squadron Leader. The name of the rank is the complete phrase; it is never shortened to "Lieutenant"...

 (Flt Lt)
O-3
OF-1 Lieutenant
Lieutenant
Lieutenant is a military, naval, paramilitary, fire service, emergency medical services or police officer rank....

 (Lt)
First Lieutenant
First Lieutenant
First Lieutenant is a military rank.The rank of Lieutenant has different meanings in different military formations , but the majority of cases it is common for it to be sub-divided into a senior and junior rank...

 (1LT/1st Lt/1stLt)
Sub‑Lieutenant
Sub-Lieutenant
Sub-lieutenant is a military rank. It is normally a junior officer rank.In many navies, a sub-lieutenant is a naval commissioned or subordinate officer, ranking below a lieutenant. In the Royal Navy the rank of sub-lieutenant is equivalent to the rank of lieutenant in the British Army and of...

 (SLt)
Lieutenant, Junior Grade
Lieutenant, Junior Grade
In the United States Navy, the United States Coast Guard, the United States Public Health Service Commissioned Corps, and the National Oceanic and Atmospheric Administration Commissioned Corps, lieutenant is a junior officer, with the pay grade of O-2. Lieutenant, junior grade ranks above ensign...

 (LTJG)
Flying Officer
Flying Officer
Flying Officer is a junior commissioned rank in the Royal Air Force and the air forces of many countries which have historical British influence...

 (Fg Off)
O-2
Second Lieutenant
Second Lieutenant
Second Lieutenant is the lowest commissioned officer military rank in many armed forces.In British English the rank is pronounced second /lɛf'tɛnənt/ , while in American English it is pronounced second /lu'tɛnənt/ ....

 (2Lt)
Second Lieutenant
Second Lieutenant
Second Lieutenant is the lowest commissioned officer military rank in many armed forces.In British English the rank is pronounced second /lɛf'tɛnənt/ , while in American English it is pronounced second /lu'tɛnənt/ ....

 (2LT/ 2d Lt/ 2ndLt)
Ensign
Ensign (rank)
Ensign is a junior rank of commissioned officer in the militaries of some countries, normally in the infantry or navy. As the junior officer in an infantry regiment was traditionally the carrier of the ensign flag, the rank itself acquired the name....

 (ENS)
Pilot Officer
Pilot Officer
Pilot Officer is the lowest commissioned rank in the Royal Air Force and the air forces of many other Commonwealth countries. It ranks immediately below Flying Officer...

 (Plt Off)
O-1
OF(D) Midshipman
Midshipman
A midshipman is an officer cadet, or alternatively a commissioned officer of the lowest rank, in the Royal Navy, United States Navy, and many Commonwealth navies.The word derives from the area aboard a ship, amidships, where these officers were berthed...

 (Mid)
Acting Pilot Officer
Pilot Officer
Pilot Officer is the lowest commissioned rank in the Royal Air Force and the air forces of many other Commonwealth countries. It ranks immediately below Flying Officer...

 (APO) [Non-Graduate Direct Entrant Officers only]
Student Officer Officer Cadet
Officer Cadet
Officer Cadet is a rank held by military cadets during their training to become commissioned officers. The term Officer Trainee is used interchangeably in some countries...

 (OCdt) 4
Cadet
Cadet
A cadet is a trainee officer in the military, a junior branch of an important family, or simply a person who is a junior trainee.- Etymology :...

 / USMC Midshipman
Midshipman
A midshipman is an officer cadet, or alternatively a commissioned officer of the lowest rank, in the Royal Navy, United States Navy, and many Commonwealth navies.The word derives from the area aboard a ship, amidships, where these officers were berthed...

 (MIDN) / Officer Candidate / Officer Trainee (OT)
Cadet
Officer Cadet
Officer Cadet is a rank held by military cadets during their training to become commissioned officers. The term Officer Trainee is used interchangeably in some countries...

 (Cdt) 5
USN Midshipman
Midshipman
A midshipman is an officer cadet, or alternatively a commissioned officer of the lowest rank, in the Royal Navy, United States Navy, and many Commonwealth navies.The word derives from the area aboard a ship, amidships, where these officers were berthed...

 (MIDN) / USCG Cadet
Cadet
A cadet is a trainee officer in the military, a junior branch of an important family, or simply a person who is a junior trainee.- Etymology :...

 or Officer Candidate
Officer Candidate
Officer Candidate is a rank in some militaries of the world that is an appointed position while a person is in training to become an officer. More often than not, an Officer Candidate is a civilian who has applied to join the military directly as an officer...

 (OC) 6
Officer Cadet
Officer Cadet
Officer Cadet is a rank held by military cadets during their training to become commissioned officers. The term Officer Trainee is used interchangeably in some countries...

 (OC) [Non-Graduate or Former Enlisted] or Student Officer (SO) [Bachelors Degree Graduate]


Not listed are U.S. warrant officers
Warrant Officer (United States)
In the United States military, a Warrant Officer is ranked as an officer above the senior-most enlisted ranks, as well as officer cadets and candidates, but below the officer grade of O-1...

. In accordance with Army Regulation (AR) 135-100, US Department of the Army Pamphlet (DA Pam) 600-11 and US Army Field Manual (FM) 22-100 (para A-3), a warrant officer is an officer who can and does command, carry out military justice actions and sits on both selection and promotion boards. A US warrant officer is a single-track specialty officer, initially appointed by the US Secretary of the Army; he/she receives a commission upon promotion to Chief Warrant Officer Two (CW2).

Notes to table above
  1. RAF-style ranks are also used by the 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 began in March 1912 as the Australian Flying Corps making it the second oldest air force in the world...

    , Royal New Zealand Air Force
    Royal New Zealand Air Force
    The Royal New Zealand Air Force is the air arm of the New Zealand Defence Force. It was formed from New Zealand components of the British Royal Air Force, becoming an independent force in 1923, although many RNZAF aircrew continued to serve in the Royal Air Force until the end of the 1940s...

    , Nigerian Air Force
    Nigerian Air Force
    The Nigerian Air Force is the air arm of the Nigerian military.It is one of the largest in West Africa, consisting of grounded, unserviceable fighter aircraft including 32 Mikoyan-Gurevich MiG-21s, and 24 Dassault-Dornier Alpha Jets, and a handful of Russian made bombers and military transport...

    , Indian Air Force
    Indian Air Force
    The Indian Air Force is the air arm of the armed forces of India. Its primary responsibility is to secure Indian airspace and to conduct aerial warfare during a conflict...

    , Pakistan Air Force
    Pakistan Air Force
    Pakistan Air Force is the air arm of the Pakistan Armed Forces and is primarily tasked with the aerial defence of Pakistan with a secondary role to provide air support to the Pakistan Army and the Pakistan Navy. The PAF also has a tertiary role to provide strategic air transport and logistics...

    , Bangladesh Air Force
    Bangladesh Air Force
    The Bangladesh Air Force , is the tactical and strategic air branch of the Bangladesh Armed Forces. It also provides air support for ground troops...

     and Sri Lanka Air Force. The Ghana Air Force
    Ghana Air Force
    The Ghana Air Force is the air force of the African nation of Ghana. The GAF, along with the Ghanaian Army and Navy, make up the armed forces of Ghana which are controlled by that nation's Ministry of Defence....

     and Air Force of Zimbabwe
    Air Force of Zimbabwe
    The Air Force of Zimbabwe is the air force of Zimbabwe. It was known as the Rhodesian Air Force until 1980.At one point the air force was well respected, having been credited with helping defend Kinshasa in 1998, but most planes of Western origin have been grounded in recent years for lack of...

     (previously Royal Rhodesian Air Force
    Royal Rhodesian Air Force
    The Royal Rhodesian Air Force was the air arm of the British colonial state of Rhodesia. It existed between 1935 and 1980 under various names, and is now the Air Force of Zimbabwe.-History:...

    ) also use the same basic system, but replace Pilot Officer and Flying Officer with Air Sub Lieutenant and Air Lieutenant. The Royal Thai Air Force
    Royal Thai Air Force
    The Royal Thai Air Force or RTAF is the air force of the Kingdom of Thailand. As of 2008, the Commander of the Air Force is Itthaporn Subhawong.-History:...

     uses the RAF ranks also. The Royal Canadian Air Force
    Royal Canadian Air Force
    The Royal Canadian Air Force was the air force of Canada from 1924 until 1968 when the three branches of the Canadian military were merged into the Canadian Forces...

     and Royal Malaysian Air Force
    Royal Malaysian Air Force
    The Royal Malaysian Air Force was formed on 2 June 1958 as the Royal Malayan Air Force . However, its roots could be traced to the Malayan Auxiliary AF formations of the British Royal Air Force in then colonial Malaya...

     also previously used the system.
  2. OF-10 ranks in the United States can only be attained during war time. This is also now generally the case in the UK, although provision is made to award them under special circumstances in peacetime (no promotions to these ranks have been made since they were generally suspended in 1997).
  3. The Royal Marines rank alongside their army equivalents. However, when borne on the books of any of HM Ships or Naval Establishments Royal Marines are subject to the Naval Discipline Act 1957; in those circumstances, many officer ranks in the Royal Marines formerly enjoyed greater status. Second Lieutenant
    Second Lieutenant
    Second Lieutenant is the lowest commissioned officer military rank in many armed forces.In British English the rank is pronounced second /lɛf'tɛnənt/ , while in American English it is pronounced second /lu'tɛnənt/ ....

    s were equivalent to Sub Lieutenants and ranks from Lieutenant
    Lieutenant
    Lieutenant is a military, naval, paramilitary, fire service, emergency medical services or police officer rank....

     to Major
    Major
    In many European languages, the term Major is a military rank, implying seniority at one of usually various levels of rank. For example:*"General-Major" or "Major-General", denoting a senior ranking general officer....

     were considered equivalent to one rank higher (OF-2 to OF-4). Lieutenant Colonel
    Lieutenant Colonel
    Lieutenant colonel is a rank of commissioned officer in the armies and most marine forces and air forces of the world, typically ranking above a major and below a colonel. The rank of lieutenant colonel is often shortened to simply "colonel" in conversation and in unofficial correspondence...

    s were considered equivalent to RN
    Royal Navy
    The Royal Navy of the United Kingdom is the oldest of HM Armed Forces . From the beginning of the 18th century until well into the 20th century, it was the most powerful navy in the world, playing a key part in establishing the British Empire as the dominant world power from 1815 until the early...

     Captains
    Captain (naval)
    Captain is the name most often given in English-speaking navies to the rank corresponding to command of the largest ships. The NATO rank code is OF-5, equivalent to an army full colonel.The equivalent rank in many navies is Ship-of-the-Line Captain...

     with less than six years in the rank, and Colonel
    Colonel
    Colonel is a military rank of a commissioned officer, with corresponding ranks existing in almost every country in the world. It is also used in some police forces and other paramilitary rank structures...

    s were equivalent to Captains
    Captain (naval)
    Captain is the name most often given in English-speaking navies to the rank corresponding to command of the largest ships. The NATO rank code is OF-5, equivalent to an army full colonel.The equivalent rank in many navies is Ship-of-the-Line Captain...

     with more than six years seniority. Higher ranks followed the equivalence on the table above. This state of affairs ended on 1 July 1999, when Royal Marine officer ranks were fully aligned with those of the Army.
  4. Not used in the Royal Marines. Royal Marines officers join as Second Lieutenants; after two years service, provided that Phase 2 training has been successfully completed, they are promoted to the rank of Lieutenant (if under 21 at the time of joining) or Captain (if 21 or older at the time of joining).
  5. No longer used in the Royal Navy. Officers join BRNC Dartmouth as Midshipmen (if non-graduates) or Sub-Lieutenants (if graduates), but use the non-substantive rank of Officer Cadet (O/C) during the pre-Initial Sea Training phase.
  6. Depends on Officer commissioning Program, Naval Academy, Merchant Marine Academy and NROTC are MIDN; U.S. Coast Guard Academy are Cadets, .S. Navy Seaman-to-Admiral 21 (STA-21), and Officer Candidate School
    Officer Candidate School
    Officer Candidate School or Officer Cadet School are institutions which train civilians and enlisted personnel in order for them to gain a commission as officers in the armed forces of a country....

     are OC.
  7. Note that the U.S. military usually uses O-1 to O-10 to symbolize officers, and not the NATO codes of OF-1 to OF-10 in which all subaltern officers are classed as OF-1 (O-1 and O-2 in US). O-11 is sometimes used for the U.S. OF-10 ranks, but is not official.

US "Enlisted" and UK "Other" ranks compared


The British Armed Forces do not use the term Enlisted Ranks. The equivalent in the Royal Navy is Ratings and in the other services is Other Ranks
Other Ranks
Other Ranks in the British Army, Royal Marines and Royal Air Force are those personnel who are not commissioned officers...

 (divided into Warrant Officers, Non-Commissioned Officers and Soldiers or Airmen).

UK and US ranks are categorised in the NATO rank code system OR-1 to OR-9. Ranks with the same code are equivalent.
NATO
NATO
The North Atlantic Treaty Organization ); ), also called "the Atlantic Alliance", is an intergovernmental military alliance based on the North Atlantic Treaty which was signed on April 4, 1949...

 Rank code
US Army
United States Army
The United States Army is the branch of the United States Military responsible for land-based military operations. It is the largest and oldest established branch of the U.S. military and is one of seven uniformed services...

USAF
United States Air Force
The United States Air Force is the aerial warfare branch of the U.S. armed forces and one of the American uniformed services. Initially part of the United States Army, the USAF was formed as a separate branch of the military on 18 September 1947 under the National Security Act of 1947 - 80 P.L....

USMC
United States Marine Corps
The United States Marine Corps is a branch of the United States armed forces responsible for providing force projection from the sea, using the mobility of the United States Navy to rapidly deliver combined-arms task forces. It is one of seven uniformed services of the United States...

USN
United States Navy
The United States Navy is the sea branch of the U.S. Armed Forces. It is one of the seven uniformed services of the United States. As of 31 December 2008, the U.S. Navy had about 331,682 personnel on active duty and 124,000 in the Navy Reserve. It operates 283 ships in active service and more than...

 and USCG
United States Coast Guard
The United States Coast Guard is a branch of the United States Armed Forces and one of seven uniformed services. It is unique among the military branches in that it has a maritime law enforcement mission and a federal regulatory agency mission as part of its mission set...

British Army
British Army
The British Army is the land armed forces branch of the British Armed Forces. It came into being with the unification of the Kingdoms of England and Scotland into the Kingdom of Great Britain in 1707. The new British Army incorporated Regiments that had already existed in England and Scotland and...

Royal Marines
Royal Marines
The Royal Marines are the marine corps and amphibious infantry of the United Kingdom and, along with the Royal Navy and Royal Fleet Auxiliary, form the Naval Service. They are also the United Kingdom's specialists in amphibious warfare, including the operation of landing craft; mountain warfare;...

Royal Navy
Royal Navy
The Royal Navy of the United Kingdom is the oldest of HM Armed Forces . From the beginning of the 18th century until well into the 20th century, it was the most powerful navy in the world, playing a key part in establishing the British Empire as the dominant world power from 1815 until the early...

RAF
Royal Air Force
The Royal Air Force is the United Kingdom's air force, the oldest independent air force in the world. Formed on 1 April 1918, the RAF has taken a significant role in British military history ever since, playing a large part in World War II and in more recent conflicts.The RAF operates almost 1,109...

OR-9 Sergeant Major of the Army
Sergeant Major of the Army
The Sergeant Major of the Army is a unique non-commissioned rank in the United States Army. The holder of this rank is the senior enlisted member of the Army, and is appointed to serve as a spokesman to address the issues of enlisted soldiers to the Army's highest positions. As such, they are the...

Chief Master Sergeant of the Air Force
Chief Master Sergeant of the Air Force
The Chief Master Sergeant of the Air Force is a unique non-commissioned rank in the United States Air Force. The holder of this rank and post represents the highest enlisted level of leadership in the Air Force, and as such, provides direction for the enlisted corps and represents their interests,...

 (CMSAF)
Sergeant Major of the Marine Corps
Sergeant Major of the Marine Corps
Sergeant Major of the Marine Corps is a unique non-commissioned rank and billet in the United States Marine Corps....

Master Chief Petty Officer of the Navy
Master Chief Petty Officer of the Navy
The Master Chief Petty Officer of the Navy is a unique non-commissioned rank in the United States Navy, which has a paygrade of E-9. The holder of this rank and post is the most senior enlisted member of the U.S...

 (MCPON) or Master Chief Petty Officer of the Coast Guard
Master Chief Petty Officer of the Coast Guard
The Master Chief Petty Officer of the Coast Guard is a unique non-commissioned rank in the United States Coast Guard.The holder of this rank and post is the senior enlisted member of the U.S...

 (MCPOCG)
Warrant Officer Class 1
Warrant Officer
A Warrant Officer is a member of a military organization holding one of a specific group of ranks.The rank was first used in the English Royal Navy and is today used in many other countries, essentially the Commonwealth and USA...

(WO1) (most senior appointments)
Warrant Officer Class 1
Warrant Officer
A Warrant Officer is a member of a military organization holding one of a specific group of ranks.The rank was first used in the English Royal Navy and is today used in many other countries, essentially the Commonwealth and USA...

(WO1) (Regimental Sergeant Major
Regimental Sergeant Major
Regimental Sergeant Major is an appointment held by Warrant Officers Class 1 in the British Army, the British Royal Marines and in the armies of many Commonwealth nations, including Australia and New Zealand; and by Chief Warrant Officers in the Canadian Forces...

)
Warrant Officer Class 1
Warrant Officer
A Warrant Officer is a member of a military organization holding one of a specific group of ranks.The rank was first used in the English Royal Navy and is today used in many other countries, essentially the Commonwealth and USA...

(WO1)
Chief of the Air Staff's Warrant Officer (CASWO)
Command Sergeant Major (CSM) Command Chief Master Sergeant (CMSgt) Sergeant Major
Sergeant Major
A Sergeant Major is a rank or appointment in many militaries around the world. In Commonwealth countries, Sergeants Major are usually appointments held by senior non-commissioned officers or warrant officers...

 (SgtMaj)
Master Gunnery Sergeant
Master Gunnery Sergeant
Master Gunnery Sergeant is the ninth and highest enlisted rank in the United States Marine Corps...

 (MGySgt)
Command Master Chief Petty Officer
Command Master Chief Petty Officer
-United States Navy:A Command Master Chief Petty Officer is the most senior enlisted sailor in a United States Navy unit. Being the primary liaison between commissioned officers and enlisted sailors, they are an important resource for the commanding officer as his or her senior enlisted advisor,...

 (CMCPO)
Warrant Officer Class 1
Warrant Officer
A Warrant Officer is a member of a military organization holding one of a specific group of ranks.The rank was first used in the English Royal Navy and is today used in many other countries, essentially the Commonwealth and USA...

(WO1) (Regimental Sergeant Major
Regimental Sergeant Major
Regimental Sergeant Major is an appointment held by Warrant Officers Class 1 in the British Army, the British Royal Marines and in the armies of many Commonwealth nations, including Australia and New Zealand; and by Chief Warrant Officers in the Canadian Forces...

 etc)
Warrant Officer
Warrant Officer
A Warrant Officer is a member of a military organization holding one of a specific group of ranks.The rank was first used in the English Royal Navy and is today used in many other countries, essentially the Commonwealth and USA...

(SWO)
Sergeant Major
Sergeant Major
A Sergeant Major is a rank or appointment in many militaries around the world. In Commonwealth countries, Sergeants Major are usually appointments held by senior non-commissioned officers or warrant officers...

 (SGM)
Chief Master Sergeant
Chief Master Sergeant
CMSgt Chevron
Chief Master Sergeant is the ninth, and highest, enlisted rank in the U.S. Air Force, just above Senior Master Sergeant, and is a non-commissioned officer. The official term of address is Chief Master Sergeant or Chief.Attaining the rank of Chief Master Sergeant is the pinnacle...

 (CMSgt)
Master Chief Petty Officer
Master Chief Petty Officer
- Master Chief Petty Officer :U.S. Coast Guard
Master Chief
Petty Officer
Cap & Collar deviceU.S. Coast Guard
Master Chief
Petty Officer
insigniaGood conduct
Rating badge
...

 (MCPO)
Warrant Officer Class 1
Warrant Officer
A Warrant Officer is a member of a military organization holding one of a specific group of ranks.The rank was first used in the English Royal Navy and is today used in many other countries, essentially the Commonwealth and USA...

(WO1) (other appointments)
Warrant Officer Class 1
Warrant Officer
A Warrant Officer is a member of a military organization holding one of a specific group of ranks.The rank was first used in the English Royal Navy and is today used in many other countries, essentially the Commonwealth and USA...

(WO1) (other appointments)
Warrant Officer
Warrant Officer
A Warrant Officer is a member of a military organization holding one of a specific group of ranks.The rank was first used in the English Royal Navy and is today used in many other countries, essentially the Commonwealth and USA...

(WO) / Master Aircrew
Master Aircrew
Master Aircrew is the Warrant Officer rank held by aircrew in the Royal Air Force. It is equivalent to Warrant Officer in other trades, and is effectively the highest non-commissioned Aircrew rank...

 (MAcr)
OR-8 First Sergeant
First Sergeant
-Singapore:First Sergeant is a Specialist rank in the Singapore Armed Forces. First Sergeants are the most senior of the junior Specialists, ranking above Second Sergeants, and below Staff Sergeants...

 (1SG)
Senior Master Sergeant
Senior Master Sergeant
Senior Master Sergeant is the eighth enlisted rank in the U.S. Air Force, just above Master Sergeant and below Chief Master Sergeant and is a senior non-commissioned officer ....

 (SMSgt)
First Sergeant
First Sergeant
-Singapore:First Sergeant is a Specialist rank in the Singapore Armed Forces. First Sergeants are the most senior of the junior Specialists, ranking above Second Sergeants, and below Staff Sergeants...

 (1st Sgt)
Master Sergeant
Master Sergeant
A master sergeant is the military rank for a senior non-commissioned officer in some armed forces.-United States:Master Sergeant insignia
U.S. Army
Master Sergeant insignia
U.S. Marine Corps
Master Sergeant insignia
...

 (MSgt)
Senior Chief Petty Officer
Senior Chief Petty Officer
U.S. Coast Guard
Senior Chief
Petty Officer
collar deviceU.S. Coast Guard
Senior Chief
Petty Officer
insignia
Good conduct
variation
Senior Chief
Petty Officer
insignia...

 (SCPO)
Warrant Officer Class 2
Warrant Officer
A Warrant Officer is a member of a military organization holding one of a specific group of ranks.The rank was first used in the English Royal Navy and is today used in many other countries, essentially the Commonwealth and USA...

(WO2) (Company Sergeant Major
Company Sergeant Major
A Company Sergeant Major is the senior non-commissioned soldier of a company in the armies of many Commonwealth countries, responsible for standards and discipline. In combat, his prime responsibility is the supply of ammunition to the company...

 etc)
Warrant Officer Class 2
Warrant Officer
A Warrant Officer is a member of a military organization holding one of a specific group of ranks.The rank was first used in the English Royal Navy and is today used in many other countries, essentially the Commonwealth and USA...

(WO2) (Company Sergeant Major
Company Sergeant Major
A Company Sergeant Major is the senior non-commissioned soldier of a company in the armies of many Commonwealth countries, responsible for standards and discipline. In combat, his prime responsibility is the supply of ammunition to the company...

)
Warrant Officer Class 2
Warrant Officer
A Warrant Officer is a member of a military organization holding one of a specific group of ranks.The rank was first used in the English Royal Navy and is today used in many other countries, essentially the Commonwealth and USA...

(WO2)
No OR-8 equivalent
Master Sergeant
Master Sergeant
A master sergeant is the military rank for a senior non-commissioned officer in some armed forces.-United States:Master Sergeant insignia
U.S. Army
Master Sergeant insignia
U.S. Marine Corps
Master Sergeant insignia
...

 (MSG)
Warrant Officer Class 2
Warrant Officer
A Warrant Officer is a member of a military organization holding one of a specific group of ranks.The rank was first used in the English Royal Navy and is today used in many other countries, essentially the Commonwealth and USA...

(WO2) (other appointments)
Warrant Officer Class 2
Warrant Officer
A Warrant Officer is a member of a military organization holding one of a specific group of ranks.The rank was first used in the English Royal Navy and is today used in many other countries, essentially the Commonwealth and USA...

(WO2) (other appointments)
OR-7 Sergeant First Class
Sergeant First Class
Sergeant First Class insigniaSergeant First Class is the seventh enlisted rank in the U.S. Army, above staff sergeant and below master sergeant and first sergeant, and is the first senior non-commissioned officer rank....

 (SFC)/Platoon Sergeant
Platoon Sergeant
In most armies, a platoon sergeant is the title and position given to the senior enlisted member of a platoon, who advises and supports the platoon's commanding officer in leading the unit.-Singapore:...

Master Sergeant
Master Sergeant
A master sergeant is the military rank for a senior non-commissioned officer in some armed forces.-United States:Master Sergeant insignia
U.S. Army
Master Sergeant insignia
U.S. Marine Corps
Master Sergeant insignia
...

 (MSgt)
Gunnery Sergeant
Gunnery Sergeant
Gunnery Sergeant is the seventh enlisted rank in the United States Marine Corps, just above Staff Sergeant and below Master Sergeant and First Sergeant, and is a staff non-commissioned officer . It has a pay grade of E-7....

 (GySgt)
Chief Petty Officer
Chief Petty Officer
Chief Petty Officer is a Non-commissioned officer or equivalent in many naval services and coast guards.-Canada:Chief Petty Officer refers to two ranks in the Canadian Navy...

 (CPO)
Staff Sergeant
Staff Sergeant
Staff Sergeant is a rank of non-commissioned officer used in several countries.The origin of the name is that they were part of the staff of a British army regiment and paid at that level rather than as a member of a battalion or company.-Australia:...

(SSgt) / Colour Sergeant
Colour Sergeant
Colour Sergeant is a non-commissioned rank in the Royal Marines and infantry regiments of the British Army, ranking above Sergeant and below Warrant Officer Class 2....

(CSgt) / Staff Corporal
Staff Corporal
Staff Corporal is the equivalent rank to Staff Sergeant in the Household Cavalry, ranking between Corporal of Horse and Warrant Officer Class 2. He may hold an appointment such as Squadron Quartermaster Corporal. A Staff Corporal wears four point-up rank chevrons on his cuff, surmounted by a crown...

(SCpl)
Colour Sergeant
Colour Sergeant
Colour Sergeant is a non-commissioned rank in the Royal Marines and infantry regiments of the British Army, ranking above Sergeant and below Warrant Officer Class 2....

 (CSgt)
Chief Petty Officer
Chief Petty Officer
Chief Petty Officer is a Non-commissioned officer or equivalent in many naval services and coast guards.-Canada:Chief Petty Officer refers to two ranks in the Canadian Navy...

 (CPO)
Flight Sergeant
Flight Sergeant
Flight Sergeant is a senior non-commissioned rank in the British Royal Air Force and several other air forces which have adopted all or part of the RAF rank structure...

(FS)
Chief Technician
Chief Technician
Chief Technician is a non-commissioned rank in the Royal Air Force which is only held by airmen in technical trades and by musicians. It is between Sergeant and Flight Sergeant and, like the latter has a NATO code of OR-7. Airmen in non-technical trades progress directly from sergeant to flight...

  (Chf Tech or CT)
OR-6 Staff Sergeant
Staff Sergeant
Staff Sergeant is a rank of non-commissioned officer used in several countries.The origin of the name is that they were part of the staff of a British army regiment and paid at that level rather than as a member of a battalion or company.-Australia:...

 (SSG)
Technical Sergeant
Technical Sergeant
Technical Sergeant is the name of one current and two past United States military enlisted rank.-United States Air Force:Technical Sergeant, or Tech Sergeant, is the sixth enlisted rank in the U.S. Air Force, just above Staff Sergeant and below Master Sergeant. A technical sergeant is a...

 (TSgt)
Staff Sergeant
Staff Sergeant
Staff Sergeant is a rank of non-commissioned officer used in several countries.The origin of the name is that they were part of the staff of a British army regiment and paid at that level rather than as a member of a battalion or company.-Australia:...

 (SSgt)
Petty Officer 1st Class
Petty Officer First Class
Good conduct
variation,
12 years or more
of good conductPetty Officer
First Class
insignia
&
U.S. Coast GuardPetty Officer First Class is the sixth enlisted rank in the U.S. Navy and U.S...

 (PO1)
Sergeant
Sergeant
Sergeant is a rank used in some form by most militaries, police forces, and other uniformed organizations around the world. Its origins are the Latin serviens, "one who serves", through the French term Sergent....

 (Sgt) / Corporal of Horse
Corporal of Horse
Corporal of Horse is a rank in the British Army's Household Cavalry corresponding to Sergeant in other regiments. Formerly, no cavalry regiments had sergeants, but the Household Cavalry are the only ones to keep this tradition alive. It is said to stem from the origin of the word sergeant, which...

(CoH)
Sergeant
Sergeant
Sergeant is a rank used in some form by most militaries, police forces, and other uniformed organizations around the world. Its origins are the Latin serviens, "one who serves", through the French term Sergent....

 (Sgt)
Petty Officer
Petty Officer
A Petty Officer is a noncommissioned officer or equivalent in many navies.-History:At the height of the Age of Sail there was a group of inferior officers between the sea officers, both commissioned and warrant, and the sailors commonly known as petty officers...

 (PO)
Sergeant
Sergeant
Sergeant is a rank used in some form by most militaries, police forces, and other uniformed organizations around the world. Its origins are the Latin serviens, "one who serves", through the French term Sergent....

 (Sgt)
Sergeant
Sergeant
Sergeant is a rank used in some form by most militaries, police forces, and other uniformed organizations around the world. Its origins are the Latin serviens, "one who serves", through the French term Sergent....

 (SGT)
Staff Sergeant
Staff Sergeant
Staff Sergeant is a rank of non-commissioned officer used in several countries.The origin of the name is that they were part of the staff of a British army regiment and paid at that level rather than as a member of a battalion or company.-Australia:...

 (SSgt)
Sergeant
Sergeant
Sergeant is a rank used in some form by most militaries, police forces, and other uniformed organizations around the world. Its origins are the Latin serviens, "one who serves", through the French term Sergent....

 (Sgt)
Petty Officer 2nd Class
Petty Officer Second Class
Good conduct
variation,
Petty Officer
Second Class
insignia
&
U.S. Coast GuardPetty Officer Second Class is the fifth enlisted rank in the U.S. Navy and U.S...

 (PO2)
Corporal
Corporal
Corporal is a rank in use in some form by most militaries and also by some police forces or other uniformed organizations. It is usually equivalent to NATO Rank Code OR-4. The word is probably derived from a medieval Italian phrase capo corporale, meaning "head of a body "...

 (Cpl) / Bombardier
Bombardier (rank)
Bombardier is a rank used in artillery units in the armies of Commonwealth countries instead of Corporal. Lance-Bombardier is used instead of Lance-Corporal....

(Bdr) / Lance-Sergeant (LSgt) / Lance-Corporal of Horse (LCoH)
Corporal
Corporal
Corporal is a rank in use in some form by most militaries and also by some police forces or other uniformed organizations. It is usually equivalent to NATO Rank Code OR-4. The word is probably derived from a medieval Italian phrase capo corporale, meaning "head of a body "...

 (Cpl)
Leading Rating
Leading Rating
Leading Rating is the most senior of the junior rates in the Royal Navy. It is equal in status to Corporal, although for a long time was officially junior to that rank. The rate was introduced under the authority of Admiralty Circular No...

/Leading Hand(LH)
Corporal
Corporal
Corporal is a rank in use in some form by most militaries and also by some police forces or other uniformed organizations. It is usually equivalent to NATO Rank Code OR-4. The word is probably derived from a medieval Italian phrase capo corporale, meaning "head of a body "...

 (Cpl)
OR-4 (First NCO Rank) Corporal
Corporal
Corporal is a rank in use in some form by most militaries and also by some police forces or other uniformed organizations. It is usually equivalent to NATO Rank Code OR-4. The word is probably derived from a medieval Italian phrase capo corporale, meaning "head of a body "...

 (CPL)/Specialist
Specialist (rank)
Specialist is one of the four junior enlisted ranks in the U.S. Army, just above Private First Class and equivalent in pay grade to Corporal...

 (SPC)
Senior Airman
Senior Airman
Senior Airman is the fourth enlisted rank in the United States Air Force, just above Airman First Class and below Staff Sergeant. It has a pay grade of E-4....

 (SrA)
Corporal
Corporal
Corporal is a rank in use in some form by most militaries and also by some police forces or other uniformed organizations. It is usually equivalent to NATO Rank Code OR-4. The word is probably derived from a medieval Italian phrase capo corporale, meaning "head of a body "...

 (Cpl)
Petty Officer 3rd Class
Petty Officer Third Class
U.S. Navy
Good conduct
variationU.S. Navy
Petty Officer
Third Class
insigniaPetty Officer Third Class is the fourth enlisted rank in the U.S. Navy and U.S. Coast Guard, just above Seaman and below Petty Officer Second Class, and is the lowest rank of non-commissioned...

 (PO3)
Lance-Corporal
Lance Corporal
Lance Corporal is a military rank, used by many armed forces worldwide, and also by some police forces and other uniformed organizations. It is below the rank of Corporal, and is typically the lowest Non-commissioned officer, usually equivalent to the NATO Rank Grade OR-3.- Etymology :The presumed...

 (LCpl) / Lance-Bombardier (LBdr)
Lance-Corporal
Lance Corporal
Lance Corporal is a military rank, used by many armed forces worldwide, and also by some police forces and other uniformed organizations. It is below the rank of Corporal, and is typically the lowest Non-commissioned officer, usually equivalent to the NATO Rank Grade OR-3.- Etymology :The presumed...

 (LCpl)
No OR-4 equivalent No OR-4 equivalent
OR-3 Private First Class
Private First Class
In many armed forces in the world, Private First Class is a rank held by junior enlisted persons.- United States :In the U.S. Army, Private First Class is the third lowest enlisted rank, just above Private and below Corporal or Specialist in the Army, and is equivalent to NATO Grade OR-3. In the U.S...

 (PFC)
Airman First Class
Airman First Class
Airman 1st Class is the third enlisted rank in the United States Air Force, just above Airman and below Senior Airman. The rank of Airman First Class is considered a junior enlisted rank, with the noncommissioned officers and senior noncommissioned officers above it.Promotion to A1C occurs upon...

 (A1C)
Lance Corporal
Lance Corporal
Lance Corporal is a military rank, used by many armed forces worldwide, and also by some police forces and other uniformed organizations. It is below the rank of Corporal, and is typically the lowest Non-commissioned officer, usually equivalent to the NATO Rank Grade OR-3.- Etymology :The presumed...

 (LCpl)
Seaman
Seaman
Seaman is one of the lowest ranks in a Navy. In the Commonwealth it is the lowest rank in the Navy, followed by Able Seaman and Leading Seaman, and followed by the Petty Officer ranks....

 (SN)
No OR-3 equivalent No OR-3 equivalent No OR-3 equivalent Junior Technician
Junior Technician
Junior Technician is a rank in the Royal Air Force, ranking between Senior Aircraftman and Corporal, with a NATO rank code of OR-2. As of 2005, no more airmen are being promoted to this rank....

  (Jnr Tech or JT) Replaced by Senior Aircraftman Technician (SAC Tech)
Senior Aircraft (wo)man
Senior Aircraftman
Senior Aircraftman , or Senior Aircraftwoman , is a rank in the Royal Air Force, ranking between Leading Aircraftman and Junior Technician and having a NATO rank code of OR-2. The rank, which is non-supervisory, was introduced on 1 January 1951...

 (SAC)
OR-2 Private
Private (rank)
A Private is a soldier of the lowest military rank . The term dates from the Middle Ages, where privates were known as "private soldiers" who were either hired, conscripted, or feudalized into service by a nobleman forming an army...

 (PV2)
Airman
Airman
Airman is a term used to refer to any enlisted personnel in the United States Air Force or Other Ranks in the Royal Air Force . It is also a specific rank in the United States Air Force. More informally, it can refer to any member of an air force or to any pilot or aviator, military or civilian...

 (Amn)
Private First Class
Private First Class
In many armed forces in the world, Private First Class is a rank held by junior enlisted persons.- United States :In the U.S. Army, Private First Class is the third lowest enlisted rank, just above Private and below Corporal or Specialist in the Army, and is equivalent to NATO Grade OR-3. In the U.S...

 (PFC)
Seaman Apprentice
Seaman Apprentice
Constructionman
variationFireman
variationAirman
variationSeaman
insigniaSeaman Apprentice is the second lowest enlisted rank in the U.S. Navy and U.S. Coast Guard, just above Seaman Recruit and below Seaman; this rank was formerly known as Seaman Second Class.The actual title...

 (SA)
Private
Private (rank)
A Private is a soldier of the lowest military rank . The term dates from the Middle Ages, where privates were known as "private soldiers" who were either hired, conscripted, or feudalized into service by a nobleman forming an army...

 (Pte) etc (Classes 1 to 3) etc
Able Seaman
Able Seaman (rank)
-Royal Navy:In the British Royal Navy in the middle of the 18th century, the term Able Seaman referred to a seaman with at least two years' experience at sea...

Leading Aircraft (wo)man
Leading Aircraftman
Leading Aircraftman Leading Aircraftman (LAC) Leading Aircraftman (LAC) (or Leading Aircraftwoman (LACW) is a rank in some air forces, between Aircraftman and Senior Aircraftman and having a NATO rank code of OR-2. The rank badge is a horizontal two-bladed propeller....

 (LAC)
OR-1 Private
Private (rank)
A Private is a soldier of the lowest military rank . The term dates from the Middle Ages, where privates were known as "private soldiers" who were either hired, conscripted, or feudalized into service by a nobleman forming an army...

 (PV1)
Airman Basic
Airman Basic
Airman Basic is the lowest enlisted rank in the United States Air Force , immediately below Airman. The pay grade for Airman Basic is E-1.As opposed to all other USAF enlisted and officer ranks, Airman Basic has no rank insignia affiliated...

 (AB)
Private
Private (rank)
A Private is a soldier of the lowest military rank . The term dates from the Middle Ages, where privates were known as "private soldiers" who were either hired, conscripted, or feudalized into service by a nobleman forming an army...

 (Pvt)
Seaman Recruit
Seaman Recruit
Seaman Recruit is the lowest enlisted rank in the U.S. Navy and U.S. Coast Guard, just below Seaman Apprentice; this rank was formerly known as Seaman Third Class...

 (SR)
Private
Private (rank)
A Private is a soldier of the lowest military rank . The term dates from the Middle Ages, where privates were known as "private soldiers" who were either hired, conscripted, or feudalized into service by a nobleman forming an army...

 (Pte) etc (Class 4) / Junior
New Entry
Ordinary Seaman (rank)
In the Royal Navy in the middle of the 18th century, the term Ordinary Seaman was used to refer to a seaman with between one and two years' experience at sea, who showed enough seamanship to be so rated by their captain...

Aircraft (wo)man
Aircraftman
Aircraftman , or Aircraftwoman , is the lowest rank in the Royal Air Force and the air forces of several other Commonwealth countries....

 (AC)

Notes to table above
  1. A Warrant Officer
    Warrant Officer
    A Warrant Officer is a member of a military organization holding one of a specific group of ranks.The rank was first used in the English Royal Navy and is today used in many other countries, essentially the Commonwealth and USA...

     in UK service is a senior non-commissioned rank not comparable to the various grades of Warrant Officer in the US, although holding the Queen's Warrant and with certain privileges similar to those of officers. In the Army and Royal Marines, they are referred to by their appointment, of which there are many (for example, Regimental Sergeant Major
    Regimental Sergeant Major
    Regimental Sergeant Major is an appointment held by Warrant Officers Class 1 in the British Army, the British Royal Marines and in the armies of many Commonwealth nations, including Australia and New Zealand; and by Chief Warrant Officers in the Canadian Forces...

     is a WO1 appointment). The US rank is held by single track career specialists (ranking between Enlisted Ranks and 2nd Lieutenant) and have no NATO equivalent. A RN Warrant Officer Class 1 incorporated the former rank of Fleet Chief Petty Officer.
  2. RAF Flight Sergeants - Although technically equivalent to British Army Staff Sergeant this does not equate to time served or experience since the RAF does not have the rank of WO2.
  3. The RN created the rate of Warrant Officer Class 2 on 1 April 2004. Previously, there was a rate of Charge Chief Petty Officer, who usually ranked as OR-7, although above other CPOs. A Charge Chief Artificer (a highly-qualified technical CCPO) could be given a NATO OR-8 status, but still ranked below WO2 in the Army and Royal Marines. On the creation of WO2, all CCPOs were upgraded to this rate.
  4. In the US 'OR #' system, NCOs are from OR4 onwards hence the equilviants in rank name do not tie in exactly.
  5. British Sergeants/Petty Officers are seen as equal to E5 and E6 although Corporals as well as Sergeants may be appointed to an official OR-5 (i.e. E-5) military role as is suited to the particular situation.
  6. From April 1, 1999 Able Rating and Ordinary Rating merged and the rate Operator Maintainer was created to replace them, Marine 1st Class and Marine 2nd Class merged, and Junior Rating and Junior Marine were abolished.
  7. Technical trades and musicians only. Obsolescent rank (no promotions since 2005).
  8. Household Cavalry
    Household Cavalry
    The term Household Cavalry is used across the Commonwealth to describe the cavalry of the Household Divisions, a country’s most elite or historically senior military groupings or those military groupings that provide functions associated directly with the Head of state.Canada's Governor General's...

    .
  9. The most senior WO1s are, in descending order, the Conductors
    Conductor (British Army)
    Conductor is an appointment held by a few selected Warrant Officers Class 1 in the Royal Logistic Corps and is the most senior appointment that can be held by a warrant officer in the British Army...

     (Cdr) of the Royal Logistic Corps
    Royal Logistic Corps
    The Royal Logistic Corps is the British Army corps that provides the logistic support for the Army. It is the largest corps in the British Army.-History:...

    , the Academy Sergeant Major
    Academy Sergeant Major
    The Academy Sergeant Major is the senior non-commissioned officer instructor at a military academy.At the British Army's Royal Military Academy Sandhurst, the AcSM holds the rank of Warrant Officer Class 1 and his appointment is the third most senior WO appointment in the British Army The Academy...

     (AcSM), and the Garrison Sergeant Major
    Garrison Sergeant Major
    A Garrison Sergeant Major in the British Army is the senior warrant officer of a garrison and holds the rank of Warrant Officer Class 1. The GSM London District, always a guardsman, holds one of the four most senior WO1 appointments in the British Army, and has military ceremonial responsibility...

     (GSM) of the London District
  10. The rank of Junior Corporal is used by the RAF Section of the Combined Cadet Force
    Combined Cadet Force
    The Combined Cadet Force is a Ministry of Defence sponsored youth organisation in the United Kingdom. Its aim is to "provide a disciplined organisation in a school so that pupils may develop powers of leadership by means of training to promote the qualities of responsibility, self reliance,...

     as an equivalent to OR-3.
  11. Includes Regimental Sergeant Major
    Regimental Sergeant Major
    Regimental Sergeant Major is an appointment held by Warrant Officers Class 1 in the British Army, the British Royal Marines and in the armies of many Commonwealth nations, including Australia and New Zealand; and by Chief Warrant Officers in the Canadian Forces...

     (RSM), Garrison Sergeant Major
    Garrison Sergeant Major
    A Garrison Sergeant Major in the British Army is the senior warrant officer of a garrison and holds the rank of Warrant Officer Class 1. The GSM London District, always a guardsman, holds one of the four most senior WO1 appointments in the British Army, and has military ceremonial responsibility...

     (GSM), and Household Cavalry
    Household Cavalry
    The term Household Cavalry is used across the Commonwealth to describe the cavalry of the Household Divisions, a country’s most elite or historically senior military groupings or those military groupings that provide functions associated directly with the Head of state.Canada's Governor General's...

     Regimental Corporal Major
    Regimental Sergeant Major
    Regimental Sergeant Major is an appointment held by Warrant Officers Class 1 in the British Army, the British Royal Marines and in the armies of many Commonwealth nations, including Australia and New Zealand; and by Chief Warrant Officers in the Canadian Forces...

     (RCM). These appointments are similar in function to the equivalent US rank indicated, but are equal in rank to other WO1 appointments.
  12. Includes Company Sergeant Major
    Company Sergeant Major
    A Company Sergeant Major is the senior non-commissioned soldier of a company in the armies of many Commonwealth countries, responsible for standards and discipline. In combat, his prime responsibility is the supply of ammunition to the company...

     (CSM), Squadron Sergeant Major
    Company Sergeant Major
    A Company Sergeant Major is the senior non-commissioned soldier of a company in the armies of many Commonwealth countries, responsible for standards and discipline. In combat, his prime responsibility is the supply of ammunition to the company...

     (SSM), Royal Artillery
    Royal Artillery
    The Royal Artillery is the common name for the Royal Regiment of Artillery, an arm of the British Army. Despite its name, it comprises a number of regiments.-History:...

     Battery Sergeant Major
    Company Sergeant Major
    A Company Sergeant Major is the senior non-commissioned soldier of a company in the armies of many Commonwealth countries, responsible for standards and discipline. In combat, his prime responsibility is the supply of ammunition to the company...

     (BSM), Household Cavalry
    Household Cavalry
    The term Household Cavalry is used across the Commonwealth to describe the cavalry of the Household Divisions, a country’s most elite or historically senior military groupings or those military groupings that provide functions associated directly with the Head of state.Canada's Governor General's...

     Squadron Corporal Major
    Company Sergeant Major
    A Company Sergeant Major is the senior non-commissioned soldier of a company in the armies of many Commonwealth countries, responsible for standards and discipline. In combat, his prime responsibility is the supply of ammunition to the company...

     (SCM), and Band Sergeant Major
    Band Sergeant Major
    Band Sergeant Major is the appointment held by the senior playing musician in a British Army band, who holds the rank of Warrant Officer Class 2. The BSM also functions as the band's senior non-commissioned officer, has various administrative duties, and is trained in conducting...

    . These appointments are similar in function to the equivalent US rank indicated, but are equal in rank to other WO2 appointments.
  13. Infantry
    Infantry
    Infantrymen are soldiers who are specifically trained for the role of fighting on foot to engage the enemy face to face and have historically borne the brunt of the casualties of combat in wars. As the oldest branch of the Combat Arms they are the backbone of armies...

     regiment
    Regiment
    A regiment is a military unit, composed of variable numbers of battalions, commanded by a Colonel. A regiment can be broken into two distinct categories, one being an administrative unit which is responsible for non-operational management of battalions , while the other being a deployable combat...

    s.
  14. Staff Sergeant
    Staff Sergeant
    Staff Sergeant is a rank of non-commissioned officer used in several countries.The origin of the name is that they were part of the staff of a British army regiment and paid at that level rather than as a member of a battalion or company.-Australia:...

    s can also hold other appointments, such as Company Quartermaster Sergeant
    Company Quartermaster Sergeant
    Company Quartermaster Sergeant is a military rank or appointment.-Canada:A Company Quartermaster Sergeant in the Canadian Forces is the non-commissioned officer in a company who is in charge of supplies. The CQMS also serves as deputy to the Company Sergeant Major and is the second most senior NCO...

    .
  15. Royal Artillery
    Royal Artillery
    The Royal Artillery is the common name for the Royal Regiment of Artillery, an arm of the British Army. Despite its name, it comprises a number of regiments.-History:...

    .
  16. Brigade of Guards
    Foot Guards
    -British Army:The Foot Guards are the Infantry regiments of the Household Division of the British Army. There have been six regiments of foot guards, five of which still exist...

    .
  17. The alternatives to the rank of Private are as follows:
    • Air Trooper (ATpr) in the Army Air Corps;
    • Craftsman (Cfn) in the Royal Electrical and Mechanical Engineers
      Royal Electrical and Mechanical Engineers
      The Corps of Royal Electrical and Mechanical Engineers is a corps of the British Army that has responsibility for the maintenance, servicing and inspection of almost every electrical and mechanical piece of equipment within the British Army from Challenger II main battle tanks and AH64 Apache...

      ;
    • Fusilier
      Fusilier
      Fusilier was originally the name of a soldier armed with a light flintlock musket called the fusil. The word was first used around 1680, and has later developed into a regimental designation.-History:...

       (Fus) in Fusilier regiments;
    • Guardsman (Gdsm) in Foot Guards
      Foot Guards
      -British Army:The Foot Guards are the Infantry regiments of the Household Division of the British Army. There have been six regiments of foot guards, five of which still exist...

       regiments;
    • Gunner
      Gunner (rank)
      Gunner is a rank equivalent to Private in the British Army Royal Artillery and the artillery corps of other Commonwealth armies. The next highest rank is usually Lance-Bombardier, although in the Royal Canadian Artillery it is Bombardier....

       (Gnr) in the Royal Artillery
      Royal Artillery
      The Royal Artillery is the common name for the Royal Regiment of Artillery, an arm of the British Army. Despite its name, it comprises a number of regiments.-History:...

       and Royal Horse Artillery
      Royal Horse Artillery
      The regiments of the Royal Horse Artillery , dating from 1793, are part of the Royal Regiment of Artillery of the British Army...

      ;
    • Highlander in The Highlanders (Seaforth, Gordons and Camerons);
    • Kingsman in the King's Regiment;
    • Musician (Mus) in the Corps of Army Music
      Corps of Army Music
      The Corps of Army Music is a corps of the British Army. It was formed in 1994 as an umbrella organisation, centred on the Royal Military School of Music, to oversee the 29 new permanent Military Bands formed following Options for Change, although each band continues to wear the capbadges and Full...

      ;
    • Rifleman
      Rifleman
      A rifleman is a private soldier in a rifle unit of infantry.-Origins:Although ultimately originating with the 16th century handgunners and the 17th century musketeers and streltsy, equipped with firearms to support pikemen , the term rifleman originated from the 18th century...

       (Rfm) in The Rifles
      The Rifles
      The Rifles is a regiment of the British Army. It consists of five regular and two territorial battalions, plus a number of companies in other TA battalions, making it the largest regiment in the infantry...

      ;
    • Sapper
      Sapper
      A sapper or combat engineer is an individual soldier who performs a variety of combat engineering duties. Such tasks typically include bridge-building, laying or clearing minefields, demolitions, field defences, and building, road and airfield construction and repair...

       (Spr) in the Royal Engineers
      Royal Engineers
      The Corps of Royal Engineers, usually just called the Royal Engineers , and commonly known as the Sappers, is one of the corps of the British Army. It provides combat engineering and other technical support to the British Armed Forces...

      ;
    • Signaller
      Signaller
      In the armed forces, a signaller is a soldier or seaman responsible for military communications and related tasks. Most signallers are employed in the operation of radio equipment and antennas , but other signallers may be responsible for the construction and maintenance of telephone lines and...

       (Sig) in the Royal Corps of Signals
      Royal Corps of Signals
      The Royal Corps of Signals is one of the combat support arms of the British Army...

      ;
    • Trooper
      Trooper
      Trooper may refer to:* Trooper , a Canadian rock band* Trooper , a Romanian heavy metal band* Trooper , a military private rank* Trooper , a rank used by some state police agencies in the United States...

       (Tpr) in the Household Cavalry
      Household Cavalry
      The term Household Cavalry is used across the Commonwealth to describe the cavalry of the Household Divisions, a country’s most elite or historically senior military groupings or those military groupings that provide functions associated directly with the Head of state.Canada's Governor General's...

      , Royal Armoured Corps
      Royal Armoured Corps
      The Royal Armoured Corps is currently a collection of ten regular regiments, mostly converted from old horse cavalry regiments, and four Yeomanry regiments of the Territorial Army...

      , Honourable Artillery Company
      Honourable Artillery Company
      The Honourable Artillery Company is the oldest surviving regiment in the British Army, and the second most senior in the Territorial Army.-History:...

       and Special Air Service
      Special Air Service
      The Special Air Service is a special forces regiment within the British Army which has served as a model for the special forces of other countries. The SAS forms a significant section of United Kingdom Special Forces alongside the Special Boat Service , Special Reconnaissance Regiment , and the...

      ;
    • Where appropriate: Drummer (Dmr), Trumpeter (Tptr), Bugler, or Piper (Ppr).1
  18. In the USMC, the OR-8 ranks and OR-9 ranks are equivalent, but on separate tracks. (I.E. a MSgt is promoted directly to MGySgt)

See also

  • List of comparative military ranks
  • Ranks and insignia of NATO
    Ranks and insignia of NATO
    Ranks and insignia of NATO are combined military insignia used by the member countries of the North Atlantic Treaty Organization.NATO maintains a "standard rank scale" in an attempt to match every member country's military rank to corresponding ranks used by the other members...

  • British Army officer rank insignia
    British Army officer rank insignia
    - Origins :In the 17th and 18th centuries, rank was generally denoted by the quantity of lace and through other decoration used on uniforms. While a crossed sword and baton was already used by generals by 1800, until the Crimean War, the different grades of general were only distinguished by the...

  • U.S. Army officer rank insignia
  • U.S. Army enlisted rank insignia
  • Military rank
    Military rank
    Military rank is a system of hierarchical relationships in armed forces or civil institutions organized along military lines. Usually, uniforms denote the bearer's rank by particular insignia affixed to the uniforms...