The List of major U.S. Commands of World War II includes major

military A military, also known collectively as armed forces, is a heavily armed, highly organized force primarily intended for warfare. It is typically authorized and maintained by a sovereign state, with its members identifiable by their distinct ...

commands of the

United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territorie ...

. These are units above

corps Corps (; plural ''corps'' ; from French , from the Latin "body") is a term used for several different kinds of organization. A military innovation by Napoleon I, the formation was first named as such in 1805. The size of a corps varies great ...

level.

Major armies Commands

Army Air Forces The United States Army Air Forces (USAAF or AAF) was the major land-based aerial warfare service component of the United States Army and ''de facto'' aerial warfare service branch of the United States during and immediately after World War II ...

(USAAF): Formed 9 March 1942. *

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 larges ...

(AGF): Formed 9 March 1942. *

Army Service Forces The Army Service Forces was one of the three autonomous components of the United States Army during World War II, the others being the Army Air Forces and Army Ground Forces, created on 9 March 1942. By dividing the Army into three large comman ...

(ASF): Formed 9 March 1942 as

Services of Supply The Services of Supply or "SOS" branch of the Army of the USA was created on 28 February 1942 by Executive Order Number 9082 "Reorganizing the Army and the War Department" and War Department Circular No. 59, dated 2 March 1942. Services of Supp ...

(USASOS); renamed on 12 March 1943.

Theater commands

European Theater of Operations The European Theater of Operations, United States Army (ETOUSA) was a Theater of Operations responsible for directing United States Army operations throughout the European theatre of World War II, from 1942 to 1945. It commanded Army Ground For ...

(ETO): Formed 8 June 1942. *

North African Theater of Operations The Mediterranean Theater of Operations, United States Army (MTOUSA), originally called the North African Theater of Operations, United States Army (NATOUSA), was a military formation of the United States Army that supervised all U.S. Army forc ...

(NATO): Formed 4 February 1943. Redesignated Mediterranean Theater of Operations (MTO) on 1 November 1944. *

Central Pacific Area Pacific Ocean Areas was a major Allied military command in the Pacific Ocean theater of World War II. It was one of four major Allied commands during the Pacific War, and one of three United States commands in the Asiatic-Pacific Theater. Admi ...

(COMCENPAC): Primary subordinate command of Pacific Ocean Areas, also commanded by

Chester W. Nimitz Chester William Nimitz (; February 24, 1885 – February 20, 1966) was a fleet admiral in the United States Navy. He played a major role in the naval history of World War II as Commander in Chief, US Pacific Fleet, and Commander in C ...

through the war. * North Pacific Area (COMNORPAC): Formed in April 1942 as a subordinate command of Pacific Ocean Areas, commanded by

Robert A. Theobald Robert Alfred Theobald (January 25, 1884 – May 13, 1956), List of military figures by nickname#F, nicknamed "Fuzzy", was a United States Navy Commissioned officer, officer who served in World War I and World War II, and achieved the rank of Re ...

to January 1943,

Thomas C. Kinkaid Thomas Cassin Kinkaid (3 April 1888 – 17 November 1972) was an admiral in the United States Navy, known for his service during World War II. He built a reputation as a "fighting admiral" in the aircraft carrier battles of 1942 and commanded t ...

to October 1943, and

Frank J. Fletcher Frank Jack Fletcher (April 29, 1885 – April 25, 1973) was an Admiral (United States), admiral in the United States Navy during World War II. Fletcher commanded five different Task force#United States Navy, task forces through WWII; he was the ...

through the end of the war. *

Pacific Ocean Areas Pacific Ocean Areas was a major Allied military command in the Pacific Ocean theater of World War II. It was one of four major Allied commands during the Pacific War, and one of three United States commands in the Asiatic-Pacific Theater. Admira ...

(CINCPOA): Formed in April 1942 as primarily Navy command in the Pacific, consisting of Central Pacific Area, South Pacific Area, and North Pacific Area. Commanded by

through the war. *

South Pacific Area The South Pacific Area (SOPAC) was a multinational U.S.-led military command active during World War II. It was a part of the U.S. Pacific Ocean Areas under Admiral Chester Nimitz. The delineation and establishment of the Pacific Ocean Areas was ...

(COMSOPAC): Formed in April 1942 as a subordinate command of Pacific Ocean Areas, commanded by

Robert L. Ghormley Vice Admiral Robert Lee Ghormley (October 15, 1883 – June 21, 1958) was an admiral in the United States Navy who served as Commander, South Pacific Area during World War II. Early years Born in Portland, Oregon, Ghormley was the oldest of six ...

through October 1942,

William Halsey, Jr. William Frederick "Bull" Halsey Jr. (October 30, 1882 – August 16, 1959) was an American Navy admiral during World War II. He is one of four officers to have attained the rank of five-star fleet admiral of the United States Navy, the other ...

to June 1944, John H. Newton to March 1945, and Admiral William L. Calhoun to the end of the war. *

Southeast Pacific Area The Southeast Pacific Area was one of the designated area commands created by the Combined Chiefs of Staff in the Pacific region during World War II. It was responsible to the Joint Chiefs of Staff via the Commander-in-Chief of the United States N ...

(COMSOEASPAC): Formed in April 1942. Never became an active theater of war. Commanded by

Ernest King Ernest Joseph King (23 November 1878 – 25 June 1956) was an American naval officer who served as Commander in Chief, United States Fleet (COMINCH) and Chief of Naval Operations (CNO) during World War II. As COMINCH-CNO, he directed the Un ...

throughout the war. *

South West Pacific Area South West Pacific Area (SWPA) was the name given to the Allied supreme military command in the South West Pacific Theatre of World War II. It was one of four major Allied commands in the Pacific War. SWPA included the Philippines, Borneo, the D ...

(COMSOWESPAC): Formed on 30 March 1942. Commanded by

Douglas MacArthur Douglas MacArthur (26 January 18805 April 1964) was an American military leader who served as General of the Army for the United States, as well as a field marshal to the Philippine Army. He had served with distinction in World War I, was C ...

throughout the war. *

China Burma India Theater China Burma India Theater (CBI) was the United States military designation during World War II for the China and Southeast Asian or India–Burma (IBT) theaters. Operational command of Allied forces (including U.S. forces) in the CBI was officia ...

(CBI): Formed 2 February 1944. Commanded by

Joseph W. Stilwell Joseph Warren "Vinegar Joe" Stilwell (March 19, 1883 – October 12, 1946) was a United States Army general who served in the China Burma India Theater during World War II. An early American popular hero of the war for leading a column walking o ...

. Split into China Theater under

Albert Coady Wedemeyer General (United States), General Albert Coady Wedemeyer (July 9, 1896 – December 17, 1989) was a United States Army commander who served in South-East Asian Theater of World War II, Asia during World War II from October 1943 to the end of the wa ...

and India Burma Theater under Daniel I. Sultan on 24 October 1944.

Army groups

First United States Army Group First United States Army Group (often abbreviated FUSAG) was a fictitious (paper command) Allied Army Group in World War II prior to D-Day, part of Operation Quicksilver, created to deceive the Germans about where the Allies would land in Fran ...

Sixth United States Army Group The 6th United States Army Group was an Allied Army Group that fought in the European Theater of Operations during World War II. Made up of field armies from both the United States Army and the French Army, it fought in France, Germany, Austr ...

Twelfth United States Army Group The Twelfth United States Army Group was the largest and most powerful United States Army formation ever to take to the field, commanding four field armies at its peak in 1945: First United States Army, Third United States Army, Ninth United Stat ...

* Fifteenth Army Group

Armies

First United States Army First Army is the oldest and longest-established field army of the United States Army. It served as a theater army, having seen service in both World War I and World War II, and supplied the US army with soldiers and equipment during the Korea ...

: Existed prior to the war, shipped to England in October 1943. Landed at

Normandy Normandy (; french: link=no, Normandie ; nrf, Normaundie, Nouormandie ; from Old French , plural of ''Normant'', originally from the word for "northman" in several Scandinavian languages) is a geographical and cultural region in Northwestern ...

and was in North-West Europe through the end of the war. Commanded by

Omar Bradley Omar Nelson Bradley (February 12, 1893April 8, 1981) was a senior Officer (armed forces), officer of the United States Army during and after World War II, rising to the rank of General of the Army (United States), General of the Army. Bradley ...

from October 1943 to August 1944. *

Second United States Army Second Army was most recently located at Fort Belvoir, Virginia as a Direct Reporting Unit to Headquarters U.S. Army, Chief Information Officer (CIO)/G-6. Under the CIO/G-6, Second Army served as the single point of contact for Army missions an ...

: Remained in the United States through the war. *

Third United States Army Third or 3rd may refer to: Numbers * 3rd, the ordinal form of the cardinal number 3 * , a fraction of one third * 1⁄60 of a ''second'', or 1⁄3600 of a ''minute'' Places * 3rd Street (disambiguation) * Third Avenue (disambiguation) * Hig ...

: Existed prior to the war, shipped to England in January 1944. Shipped to France in July 1944 and remained in North-West Europe through the end of the war. Commanded by

George S. Patton George Smith Patton Jr. (November 11, 1885 – December 21, 1945) was a general in the United States Army who commanded the Seventh United States Army in the Mediterranean Theater of World War II, and the Third United States Army in France ...

from January 1944 to the end of the war. *

Fourth United States Army Fourth United States Army was a field army of the United States Army between 1932 and 1991. History In 1922, Fourth Army was organized as a unit of the Organized Reserves in New York City. It was allotted to the Regular Army as an inactive unit ...

: Remained in the United States. *

Fifth United States Army Fifth is the ordinal form of the number five. Fifth or The Fifth may refer to: * Fifth Amendment to the United States Constitution, as in the expression "pleading the Fifth" * Fifth column, a political term * Fifth disease, a contagious rash that ...

: Activated in August 1943 at

Algiers Algiers ( ; ar, الجزائر, al-Jazāʾir; ber, Dzayer, script=Latn; french: Alger, ) is the capital and largest city of Algeria. The city's population at the 2008 Census was 2,988,145Census 14 April 2008: Office National des Statistiques ...

. Landed at

Salerno Salerno (, , ; nap, label= Salernitano, Saliernë, ) is an ancient city and ''comune'' in Campania (southwestern Italy) and is the capital of the namesake province, being the second largest city in the region by number of inhabitants, after ...

in September 1943 and remained in Italy through the war. Commanded by

Mark W. Clark Mark Wayne Clark (May 1, 1896 – April 17, 1984) was a United States Army officer who saw service during World War I, World War II, and the Korean War. He was the youngest four-star general in the US Army during World War II. During World War I ...

to November 1944 and

Lucian Truscott General Lucian King Truscott Jr. (January 9, 1895 – September 12, 1965) was a highly decorated senior United States Army officer, who saw distinguished active service during World War II. Between 1943–1945, he successively commanded the 3rd ...

through the end of the war. *

Sixth United States Army Sixth Army is a theater army of the United States Army. The Army service component command of United States Southern Command, its area of responsibility includes 31 countries and 15 areas of special sovereignty in Central and South America and t ...

Seventh United States Army The Seventh Army was a United States army created during World War II that evolved into the United States Army Europe (USAREUR) during the 1950s and 1960s. It served in North Africa and Italy in the Mediterranean Theater of Operations and Fran ...

Eighth United States Army The Eighth Army is a U.S. field army which is the commanding formation of all United States Army United States Forces Korea, forces in South Korea. It commands U.S. and South Korean units and is headquartered at the Camp Humphreys,

Ninth United States Army The Ninth Army is a field army of the United States Army, garrisoned at Caserma Ederle, Vicenza, Italy. It is the United States Army Service Component Command of United States Africa Command (USAFRICOM or AFRICOM). Activated just eight weeks bef ...

Tenth United States Army The Tenth United States Army was the last army level command established during the Pacific War during World War II, and included divisions from both the U.S. Army and the U.S. Marine Corps. History The headquarters of the Tenth Army was formed ...

Fifteenth United States Army The Fifteenth United States Army, commonly known as Fifteenth Army, was a field army of the United States in the European Theater of World War II. It was the last United States field army to see service in northwestern Europe during the war an ...

Fleets

Asiatic Fleet The United States Asiatic Fleet was a fleet of the United States Navy during much of the first half of the 20th century. Before World War II, the fleet patrolled the Philippine Islands. Much of the fleet was destroyed by the Japanese by Februar ...

* Atlantic Fleet * Pacific Fleet *

Third Fleet The United States Third Fleet is one of the numbered fleets in the United States Navy. Third Fleet's area of responsibility includes approximately fifty million square miles of the eastern and northern Pacific Ocean areas including the Bering ...

* Fourth Fleet *

Fifth Fleet The Fifth Fleet is a numbered fleet of the United States Navy. It has been responsible for naval forces in the Persian Gulf, Red Sea, Arabian Sea, and parts of the Indian Ocean since 1995 after a 48-year hiatus. It shares a commander and headq ...

Seventh Fleet The Seventh Fleet is a numbered fleet of the United States Navy. It is headquartered at U.S. Fleet Activities Yokosuka, in Yokosuka, Kanagawa Prefecture, Japan. It is part of the United States Pacific Fleet. At present, it is the largest of th ...

* Eighth Fleet * Ninth Fleet *

Tenth Fleet The U.S. Tenth Fleet is a functional formation and a numbered fleet in the United States Navy. It was first created as an anti-submarine warfare coordinating organization during the Battle of the Atlantic in the Second World War. It was react ...

* Twelfth Fleet * Sixteen Fleet

Seaboards

Alaska Sea Frontier Sea Frontiers were several, now disestablished, commands of the United States Navy as areas of defense against enemy vessels, especially submarines, along the U.S. coasts. They existed from 1 July 1941 until in some cases the 1970s. Sea Frontiers ...

Caribbean Sea Frontier Sea Frontiers were several, now disestablished, commands of the United States Navy as areas of defense against enemy vessels, especially submarines, along the U.S. coasts. They existed from 1 July 1941 until in some cases the 1970s. Sea Frontiers ...

Eastern Sea Frontier The Eastern Sea Frontier (EASTSEAFRON) was a United States Navy operational command during World War II, that was responsible for the coastal waters from Canada to Jacksonville, Florida, extending out for a nominal distance of two hundred miles. T ...

Gulf Sea Frontier Sea Frontiers were several, now disestablished, commands of the United States Navy as areas of defense against enemy vessels, especially submarines, along the U.S. coasts. They existed from 1 July 1941 until in some cases the 1970s. Sea Frontiers ...

Hawaiian Sea Frontier Sea Frontiers were several, now disestablished, commands of the United States Navy as areas of defense against enemy vessels, especially submarines, along the U.S. coasts. They existed from 1 July 1941 until in some cases the 1970s. Sea Frontiers ...

Moroccan Sea Frontier Sea Frontiers were several, now disestablished, commands of the United States Navy as areas of defense against enemy vessels, especially submarines, along the U.S. coasts. They existed from 1 July 1941 until in some cases the 1970s. Sea Frontiers ...

Northwest Sea Frontier Sea Frontiers were several, now disestablished, commands of the United States Navy as areas of defense against enemy vessels, especially submarines, along the U.S. coasts. They existed from 1 July 1941 until in some cases the 1970s. Sea Frontiers ...

Panama Sea Frontier The Panama Sea Frontier was a U.S. Navy command responsible during and shortly after World War II for the defense of the Pacific and Atlantic sea approaches to the Panama Canal and naval shore facilities in the Central America region. The Sea Fron ...

Philippine Sea Frontier The Philippine Sea Frontier (PHILSEAFRON) was a United States Navy Sea Frontier active in 1941, and reformed in 1944. On 8 December 1941 it was part of the 16th Naval District, a component of the United States Asiatic Fleet. (Naval Coastal Front ...

Western Sea Frontier Sea Frontiers were several, now disestablished, commands of the United States Navy as areas of defense against enemy vessels, especially submarines, along the U.S. coasts. They existed from 1 July 1941 until in some cases the 1970s. Sea Frontiers ...

Naval Task Forces

Task Force 38 The Fast Carrier Task Force (TF 38 when assigned to Third Fleet, TF 58 when assigned to Fifth Fleet), was the main striking force of the United States Navy in the Pacific War from January 1944 through the end of the war in August 1945. The task ...

Task Force 58 The Fast Carrier Task Force (TF 38 when assigned to Third Fleet, TF 58 when assigned to Fifth Fleet), was the main striking force of the United States Navy in the Pacific War from January 1944 through the end of the war in August 1945. The task ...

Naval Forces

United States Naval Forces Europe United States Naval Forces Europe-Africa (CNE-CNA), is the United States Navy component command of the United States European Command and United States Africa Command. Prior to 2020, CNE-CNA was previously referred to as United States Naval Forces ...

Naval Forces France A navy, naval force, or maritime force is the branch of a nation's armed forces principally designated for naval warfare, naval and amphibious warfare; namely, lake-borne, riverine, littoral zone, littoral, or ocean-borne combat operations and ...

United States Naval Forces Germany United States Naval Forces Germany (NAVFORGER) was a command of the United States Navy, active from 1944 to 1958. It also had the designation Task Force 104 (TF-104). NAVFORGER was responsible for all US naval activities in Germany. Its first co ...

* Amphibious Force, Pacific Fleet ( ComPhibPac) * Amphibious Force North Pacific * Amphibious Force South Pacific *

Amphibious Force South-West Pacific Amphibious means able to use either land or water. In particular it may refer to: Animals * Amphibian, a vertebrate animal of the class Amphibia (many of which live on land and breed in water) * Amphibious caterpillar * Amphibious fish, a fi ...

* Amphibious Training Command * III Amphibious Force *

V Amphibious Force V, or v, is the twenty-second and fifth-to-last letter in the Latin alphabet, used in the modern English alphabet, the alphabets of other western European languages and others worldwide. Its name in English is ''vee'' (pronounced ), plural ...

VII Amphibious Force Expeditionary Strike Group SEVEN/Task Force 76 (Amphibious Force U.S. SEVENTH Fleet) is a United States Navy task force. It is part of the United States Seventh Fleet and the USN's only permanently forward-deployed expeditionary strike group ...

* IX Amphibious Force * XI Amphibious Force

Marine commands

Fleet Marine Force, Pacific The United States Fleet Marine Force, Pacific (FMFPAC) is the largest maritime landing force in the world. Its units are spread across the Pacific Ocean and reports to the United States Pacific Command. It is headquartered at MCB Camp H. M ...

(FMFPac) *

III Amphibious Corps III Marine Expeditionary Force (III MEF) is a formation of the Marine Air-Ground Task Force of the United States Marine Corps. It is forward-deployed and able to rapidly conduct operations across the spectrum from humanitarian assistance and d ...

(III AC) *

V Amphibious Corps The V Amphibious Corps (VAC) was a formation of the United States Marine Corps which was composed of the 3rd, 4th and 5th Marine Divisions in World War II. The three divisions were the amphibious landing force for the United States Fifth Fleet ...

(VAC)

Air Forces

First Air Force The First Air Force (Air Forces Northern; 1 AF-AFNORTH) is a numbered air force of the United States Air Force Air Combat Command (ACC). It is headquartered at Tyndall Air Force Base, Florida. Its primary mission is the air defense of the Co ...

Second Air Force The Second Air Force (2 AF; ''2d Air Force'' in 1942) is a USAF numbered air force responsible for conducting basic military and technical training for Air Force enlisted members and non-flying officers. In World War II the CONUS unit defended ...

Third Air Force The Third Air Force (Air Forces Europe) (3 AF) is a numbered air force of the United States Air Forces in Europe - Air Forces Africa (USAFE-AFAFRICA). Its headquarters is Ramstein Air Base, Germany. It is responsible for all U.S. air forces in E ...

Fourth Air Force The Fourth Air Force (4 AF) is a numbered air force of the Air Force Reserve Command (AFRC). It is headquartered at March Air Reserve Base, California. 4 AF directs the activities and supervises the training of more than 30,000 Air Force Reser ...

Fifth Air Force The Fifth Air Force (5 AF) is a numbered air force of the United States Air Force Pacific Air Forces (PACAF). It is headquartered at Yokota Air Base, Japan. It is the U.S. Air Force's oldest continuously serving Numbered Air Force. The organiza ...

Sixth Air Force Sixth is the ordinal form of the number six. * The Sixth Amendment, to the U.S. Constitution * A keg of beer, equal to 5 U.S. gallons or barrel * The fraction Music * Sixth interval (music)s: ** major sixth, a musical interval ** minor sixth ...

Seventh Air Force The Seventh Air Force (Air Forces Korea) (7 AF) is a Numbered Air Force of the United States Pacific Air Forces (PACAF). It is headquartered at Osan Air Base, South Korea. The command's mission is to plan and direct air component operations in ...

Eighth Air Force The Eighth Air Force (Air Forces Strategic) is a numbered air force (NAF) of the United States Air Force's Air Force Global Strike Command (AFGSC). It is headquartered at Barksdale Air Force Base, Louisiana. The command serves as Air Force ...

Ninth Air Force The Ninth Air Force (Air Forces Central) is a Numbered Air Force of the United States Air Force headquartered at Shaw Air Force Base, South Carolina. It is the Air Force Service Component of United States Central Command (USCENTCOM), a joint De ...

Tenth Air Force The Tenth Air Force (10 AF) is a unit of the U.S. Air Force, specifically a numbered air force of the Air Force Reserve Command (AFRC). 10 AF is headquartered at Naval Air Station Fort Worth Joint Reserve Base/Carswell Field (formerly Carswell AF ...

Eleventh Air Force The Eleventh Air Force (11 AF) is a Numbered Air Force of the United States Air Force Pacific Air Forces (PACAF). It is headquartered at Joint Base Elmendorf–Richardson, Alaska.This unit is not related to the Eleventh Air Force headquarte ...

Twelfth Air Force The Twelfth Air Force (12 AF; Air Forces Southern, (AFSOUTH)) is a Numbered Air Force of the United States Air Force Air Combat Command (ACC). It is headquartered at Davis–Monthan Air Force Base, Arizona. The command is the air component to U ...

Thirteenth Air Force The Thirteenth Air Force (Air Forces Pacific) (13 AF) was a numbered air force of the United States Air Force Pacific Air Forces (PACAF). It was last headquartered at Hickam Air Force Base on the island of Oahu, Hawaii. 13 AF has never been stat ...

Fourteenth Air Force The Fourteenth Air Force (14 AF; Air Forces Strategic) was a numbered air force of the United States Air Force Space Command (AFSPC). It was headquartered at Vandenberg Air Force Base, California. The command was responsible for the organizatio ...

Fifteenth Air Force The Fifteenth Air Force (15 AF) is a numbered air force of the United States Air Force's Air Combat Command (ACC). It is headquartered at Shaw Air Force Base. It was reactivated on 20 August 2020, merging the previous units of the Ninth Air Force ...

Twentieth Air Force The Twentieth Air Force (Air Forces Strategic) (20th AF) is a numbered air force of the United States Air Force Global Strike Command (AFGSC). It is headquartered at Francis E. Warren Air Force Base, Wyoming. 20 AF's primary mission is Interco ...

Air Transport Command Air Transport Command (ATC) was a United States Air Force unit that was created during World War II as the strategic airlift component of the United States Army Air Forces. It had two main missions, the first being the delivery of supplies and ...