High Quality Content by WIKIPEDIA articles! The XX Corps of the United States Army fought from northern France to Austria in World War II. Constituted by redesignating the IV Armored Corps, which had been activated at Camp Young, California on September 5, 1942, XX Corps became operational in France as part of Lieutenant General George S. Patton's U.S. Third Army on August 1, 1944. Initially assigned to protect the south flank of the U.S. Third Army, XX Corps secured the bridgehead at Le Mans and liberated Angers on August 10, 1944. The corps fought a successful five day battle for Chartres from August 15 - 19, and seized a bridgehead over the Aunay River. Liberating Fontainebleau on August 23, the corps moved rapidly east against disorganized German resistance and seized bridgeheads over the Seine River at Melun and Montereau.
