Fort Donelson National Battlefield

Fort Donelson National Battlefield occupies ground where river engineering, artillery siting, and operational planning intersected to reshape the Western Theater of the American Civil War. Positioned above the Cumberland River near Dover, the Confederate earthworks and water batteries were laid out in 1861 to bar Federal use of the Tennessee and Cumberland—natural invasion corridors into the Deep South. Their eventual capture in February 1862 by forces under Ulysses S. Grant and Andrew H. Foote opened both rivers to Union control, triggered the fall of Nashville, and marked one of the war’s first decisive Union victories. Surviving earthworks, the river batteries, and the altered river course—now part of Lake Barkley after twentieth-century dam construction—allow close study of how terrain, elevation, and field engineering shaped the campaign. The battlefield’s later evolution from War Department military park to National Park Service-administered national battlefield reflects nearly a century of preservation work, boundary expansions, and land transfers, including the integration of associated sites such as Fort Heiman, that collectively safeguard a critical example of early-war Confederate fortification and Union joint operations.