GENERAL ORDERS, No. 14. WAR DEPARTMENT, Adjutant General’s Office, Washington, May 3, 1861. The States of Ohio, Indiana, and Illinois will constitute a new Military Department, (soon to he subdivided into several others,) to be called the Department of the Ohio. Major General George 13. McClellan, Ohio Volunteers, is assigned to its command ; Headquarters at Cincinnati. By obdeh : L. THOMAS, Adjutant General. Official : Assistant Adjutant General.