Army Corps

First 1922	Second 1919	Third 1918	Fourth 1918	Fifth 1918
Pacific	Italy	E.T.O.	Italy	E.T.O.

Sixth 1919	Seventh 1918	Seventh 1944	Eighth 1918	Ninth 1940
Italy E.T.O.	E.T.O.	E.T.O.	E.T.O.	Pacific

Xth 1942	XIth 1922	XIth 1942	XIIth 1923	XIIIth 1923
Pacific	U.S.	Pacific	E.T.O.	E.T.O.

XIVth 1923	XVth 1943	XVIth 1944	XVIIIth 1944 (1)	XIXth 1935
Pacific	E.T.O.	E.T.O.	E.T.O.	U.S.

XIXth 1944	XIXth 1944	XXth 1943	XXIst 1944	XXIInd 1944
U.S.	E.T.O.	E.T.O.	E.T.O.	E.T.O.

XXIIIth 1944	XXIVth 1944	XXXIst 1944	XXXIIIrd 1944	XXXVIth 1944
E.T.O.	Pacific	not activated (Phantom Corps)	not activated (Phantom Corps)	U.S.

Fourth Armored 1940 (2)

U.S.

Notes:

1. Became 18^th Airborne Corps in August 1944.
2. Inactivated in 1943 (became XX Corps). First-Fourth Armored Corps existed.