May 3, 1861
Issued by the U.S. War Department on May 3, 1861, General Orders No. 14 created the Department of the Ohio.
GENERAL ORDERS NO. 14
War Dep't, Adjutant General's Office,
Washington, May 3, 1861.
The States of Ohio, Indiana, and Illinois will constitute a new Military Department, (soon to be subdivided into several others,) to be called the Department of the Ohio.
Major General George B. McClellan, Ohio Volunteers, is assigned to its command; Headquarters at Cincinnati.
L. THOMAS, Adjutant General