Original 11th Army Corps Patch

The XI Army Corps was activated on 15 June 1942 at Chicago, Illinois and was redesignated XI Corps on 19 August 1942. On 20 October 1942 Major General (later Lieutenant General) Charles P. Hall assumed command of the Corps. General Hall commanded the Corps until its disbandment.

XI Corps embarked for the South West Pacific Area in March 1944 and was assigned to the Alamo Force after arriving at Finschhafen, New Guinea.

After service in New Guinea, XI Corps participated in the liberation of the Philippines and fought in Luzon, and the Southern Philippines. In the Philippines the Corps was under the Eighth United States Army commanded by Lieutenant General (later General) Robert L. Eichelberger.