Organized 20 January 1918 at Neufchateau, France as Headquarters I Army Corps.
Inactivated 25 March 1919 in France.
Redesignated 15 August 1927 as Headquarters, XX Corps.
Redesignated 15 October 1927 as Headquarters, I Corps.
Activated 1 November 1940 at Columbia, South Carolina.
Redesignated 1 January 1941 as Headquarters, I Army Corps.
Redesignated 19 August 1942 as Headquarters, I Corps.
Inactivated 28 March 1950 in Japan.
Lieutenant General Robert E. Eichelberger - Assumed command August 1942
Major General Ennis P. Swift - Assumed command August 1944
Papua, New Guinea, Luzon