On February 6, 1862 combined Union army and naval forces of Brig. Gen. U.S. Grant and Flag Officer Andrew Foote, respectively, defeated the Confederate garrison at Fort Henry on the Tennessee River commanded by Brig. General Lloyd Tilghman. The surrender of Fort Henry preceded the defeat of Fort Donelson a week later that opened up river transport and the subsequent Union advance into Middle Tennessee.
Liberty Gap
Early in the Tullahoma Campaign, Union forces in the Army of the Cumberland advanced upon a series of gaps south