Who was the commanding  Lieutenant General of ARCENT?
XX Corps (United States) The XX Corps of the United States Army fought from northern France to Austria in World War II. Constituted on 10 October 1943 by re-designating the IV Armored Corps of the Army Ground Forces, a training organization which had been activated at Camp Young, California on 5 September 1942, XX Corps became operational in France as part of Lieutenant General George S. Patton's U.S. Third Army on 1 August 1944.
Supreme Headquarters Allied Expeditionary Force Supreme Headquarters Allied Expeditionary Force (SHAEF; ) was the headquarters of the Commander of Allied forces in north west Europe, from late 1943 until the end of World War II. U.S. General Dwight D. Eisenhower was in command of SHAEF throughout its existence. The position itself shares a common lineage with Supreme Allied Commander Europe and Atlantic, but they are different titles.