On 23 August 1944, the corps headquarters departed California for Camp Myles Standish in Massachusetts. It deployed for the European Theater of Operations (ETO) on 5 September 1944. Upon arrival at Cherbourg, France, III Corps, under the command of Major General John Millikin, was assigned to the Ninth Army, part of Lieutenant General Omar Bradley's U.S. 12th Army Group, and given the code name "CENTURY" which it retained throughout the war. The corps headquarters was established at Carteret, in Normandy, and for six weeks, the corps received and processed all the troops of the 12th Army Group arriving over the Normandy beaches during that period. The corps also participated in the "Red Ball Express" by organizing 45 provisional truck companies to carry fuel and ammunition for the units on the front lines.