The Army of the Tennessee fought in several of the largest battles of the Civil War, including the Battle of Shiloh, the Siege of Vicksburg, and the Battle of Bentonville. It played a large part in the Atlanta Campaign and fought in the Battle of Atlanta. The Army of the Tennessee marched in Washington, D.C. in the final grand review. On July 28, 1865 at Louisville, the last units were mustered out.