I Corps - United States - was created in 1918.
III Corps - United States - was created in 1918.
X Corps - United States - was created in 1942.
I Armored Corps - United States - was created in 1940.
XX Corps - United States - was created in 1943.
XXII Corps - United States - was created in 1944.
II Corps - United States - was created in 1918.
IV Corps - United States - was created in 1939.
United States Marine Corps was created in 1775.
United States Army Corps of Engineers was created in 1775.
Military Police Corps - United States - was created in 1941.
United States Army Air Corps was created in 1926.
United States Marine Corps Women's Reserve was created in 1942.