On September 21, 1864, the U.S. War Department issued General Orders, No. 259, appointing Philip H. Sheridan as commander of the Middle Military Division.
General Orders, No. 259
War Department, Adjutant General’s Office
Washington, September 21, 1864
Major General P. H. SHERIDAN is assigned by the President permanently to the command of the Middle Military Division, consisting of the Middle Department, the Departments of Washington, of the Susquehanna, and of West Virginia, to which he was temporarily assigned by General Orders, No 240.
BY ORDER OF THE SECRETARY OF WAR:
Assistant Adjutant General.