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.
General der Pioniere General der Pioniere (en: "General of the engineers") was a General of the branch rank of the German Army in Nazi Germany. Until the end of World War II in 1945, this particular general officer rank was on three-star level (OF-8), equivalent to a US Lieutenant general. The rank was introduced in 1938.