Despite the efforts to fortify his base at Bowling Green in Warren County, Kentucky over the previous months, Confederate General Albert S. Johnston determined that the attack on Fort Donelson and the continued advance of Union forces under General Don Carlos Buell after the victory at Mills Spring made his headquarters there untenable. He burned the town's two bridges over the Barren River and began evacuating the town. Four days later the retreat was complete and Buell's men took possession of the town and its impressive defenses. (By John Osborne)
Lowell H. Harrison, The Civil War in Kentucky (Lexington, KY: University of Kentucky Press, 2009), 32.