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.
Adjutant-General to the Forces The Adjutant-General to the Forces, commonly just referred to as the Adjutant-General (AG), was for just over 250 years one of the most senior officers in the British Army. He was latterly responsible for developing the Army's personnel policies and supporting its people. The Adjutant-General usually held the rank of General or Lieutenant-General. Despite his administrative role, the Adjutant-General, like most officers above the rank of Major-General, was invariably drawn from one of the combat arms, not from the support corps.