Harry Truman actually said...
Upon vacation of office by the present Representative and Chief of Counsel, the functions, duties, and powers of the Representative of the United States and its Chief of Counsel, as specified in the said Executive Order No. 9574 of May 2, 1945, as amended by this order, shall be vested in a Chief of Counsel for War Crimes to be appointed by the United States Military Governor for Germany or by his successor.
01/15/1946