On May 16, 1861, the U.S. War Department issued Special Orders, No, 135 relieving Brigadier General William S. Harney as commander of the Department of the West.
Special Orders, No. 135
War Department, Adjutant General’s Office
Washington, May 16, 1864
Brigadier General W. S. Harney is relieved from command of the Department of the West, and is granted leave of absence until further orders.