XXI Corps (United States)

XXI Corps
Shoulder sleeve insignia of XXI Corps
Active1943–45
1957–70
Country United States
Branch United States Army
SizeCorps
EngagementsWorld War II
Commanders
Notable
commanders
Frank W. Milburn
Jean de Lattre de Tassigny
Ralph C. Cooper
Van H. Bond
Harry L. Hillyard
Insignia
XXI Corps Flag

The XXI Corps was a corps of the U.S. Army during World War II. It was constituted on 2 December 1943, and activated on 6 December 1943 at Camp Polk, Louisiana. XXI Corps fought for 116 days in the European Theater of Operations, starting in the Alsace, crossing into southern Germany, and swarming into Austria, with individual elements reaching into northern Italy. The corps was commanded in combat by Major General Frank W. Milburn as a subordinate unit of the Seventh U.S. Army.

On 3 February 1944 the Headquarters and Headquarters Battery, 214th Field Artillery Group was constituted in the Army of the United States and was assigned to XXI Corps, Fourth United States Army. It was activated on 17 April 1944 at Camp Van Dorn, Mississippi.