 All the forces of the department were then organized into the Army of the Ohio with Buell in command.The Department of the Ohio was dissolved in March 11, 1862, when it was merged into the Department of the Mississippi and the Department of the Mountains.The Department of the Ohio was recreated on August 19, 1862, and consisted of the states of Ohio, Michigan, Indiana, Illinois, Wisconsin, and the part of Kentucky east of the Tennessee River.