May 27, 1864
On May 27, 1864, the U.S. War Department issued General Orders, No. 203 ordering all officers in the Military Division of West Mississippi to obey the orders of Major General Canby.
General Orders, No. 203
War Department, Adjutant General's Office
Washington, May 27, 1864
By direction of the President of the United States, the Department of Missouri is assigned to the Military Division of West Mississippi, and all officers in that Department will obey the orders of Major General Canby, U. S. Volunteers.
BY ORDER OF THE SECRETARY OF WAR:
Assistant Adjutant General.