XXIV Corps was activated at Fort Shafter, Hawaii, on April 8, 1944. On Sept. 11 of the same year, it embarked on combat operations near Dulag on Leyte in the Philippine Islands. At that time, the 7th Infantry Division and the 96th Infantry Division were the major command elements of the Corps, later to be joined by the 77th Infantry Division, From the Philippines, XXIV Corps moved to Okinawa, and in September 1945 moved to Korea, where it remained until deactivated in January 1949.
On Aug. 15, 1968, XXIV Corps was Reactivated at Phu Bai, Republic of Vietnam. It was placed under operational control of III Marine Amphibious Force (III MAF) - its brother-in-arms 24 years before in the South Pacific.
On March 9, 1970, the Corps headquarters moved from Phu Bai to Camp Horn in Da Nang to become the senior U.S. military headquarters in Military Region I (MRI), replacing III MAF. The commanding general of XXIV Corps is the senior advisor to the Army of the Republic of Vietnam I Corps commander. He also is responsible for coordinating the activities of all U.S. units under XXIV Corps control are the 23rd Infantry Division (Americal), the 101st Airborne Division (Airmobile) and the 1st Brigade, 5th Infantry Division (Mechanized).