ARMIES OF THE UNITED STATES IN WORLD WAR II
ARMY
First Army
Second Army
Third Army
Fourth Army
Fifth Army
Sixth Army
Seventh Army
Eighth Army
Ninth Army
Tenth
Fifteenth Army
COMMANDER
Gen. Omar Bradley, later
Gen. Courtney H. Hodges
Gen. George S. Patton
Gen. Mark Clark, later
Lt. Gen. L. K. Truscott
Gen. Walter Krueger
Gen. Alexander Patch
Gen. Robert Eichelberger
Gen. William H. Simpson
Gen. Simon Bucker, later
Gen. J. W. Stilwell
Lt. Gen. Leonard T. Gerow
SITE OF ACTION
France and Germany
Remained stateside
France and Germany
Remained stateside
Italy
Philippines
S. France and Germany
Philippines
France and Germany
Okinawa
Germany
ARMY AIR FORCES OF THE UNITED STATES
AIR FORCE
First Air Force
Second Air Force
Third Air Force
Fourth Air Force
Fifth Air Force
Sixth Air Force
Seventh Air Force
Eighth Air Force
Ninth Air Force
Tenth Air Force
Eleventh Air Force
Twelfth Air Force
Thirteenth Air Force
Fourteenth Air Force
Fifteenth Air Force
Twentieth Air Force
LOCATION
Northeast Air District continental US
Northwester Air District continental US
Southeast Air District continental US
Southwest Air District continental US
Southwest Pacific
Panama Canal Zone and Caribbean
Central Pacific
England, later Okinawa
North Africa, later England and Germany
India, Burma, China
Aleutian Islands and Northern Pacific
North Africa, Italy
Southwest Pacific
China
Italy
Guam, Mariana Islands
UNITED STATES NAVY FLEETS
Pacific Fleet
Renamed from the US Fleet, Feb. 1, 1941.
Atlantic Fleet
Established Feb. 1, 1941.
Asiatic Fleet
Small. Ceased to exist Feb. 1942.
On March 15, 1943, Adm. Ernest J. King directed that these forces be designated as numbered fleets, those in the Atlantic
being given even number and those in the Pacific odd numbers.
Third Fleet
Formerly South Pacific Force, established March 15, 1943.
Fourth Fleet
Formerly South Atlantic Force, established March 15, 1943, disestablished Apr. 15, 1945.
Fifth Fleet
Formerly Central Pacific Force, established Apr. 26, 1944.
During the last part of the Pacific war, the Pacific Fleet’s principal striking force was alternately designated the Third Fleet
under the command of Adm. William H. Halsey and then designated the Fifth Fleet when it was commanded by Adm.
Raymond A. Spruance. This dual arrangement permitted each fleet commander to concentrate on planning the next
operation while his alternate was conducting the current one.
Seventh Fleet
Formerly Southwest Pacific Force, established Feb. 19, 1943. It was primarily concerned with
amphibious campaigns with Gen. Douglas MacArthur.
Eighth Fleet
Formerly US Naval Forces, NW African Waters, established Mar. 15, 1943, disestab. Apr. 15, 1945.
Tenth Fleet
Established May 20, 1943, disestablished June 12, 1945. It was a shore-based command set up to
direct American antisubmarine operations in the Atlantic.
Twelfth Fleet
Established Mar. 15, 1943. Formerly called the US Naval Forces, Europe.