KENTUCKY’S LANDSCAPE AND THE CIVIL WAR CAMPAIGNS FOR KENTUCKY, 1861-1862
Once the states neutrality ended, both sides occupied the state. The Confederates formed a defensive line across southern Kentucky, while Union forces occupied central Kentucky and cities along the Ohio River. Skirmishes occurred along the Knobstone Escarpment as the armies probed enemy positions. In early 1862, key roads, rivers, and escarpments guided the Union advance as its forces outflanked and unhinged the Confederate line, forcing the rebels to withdraw from Kentucky. Notable were the fights at Mill Springs, where the Confederates had their backs to a flooded river, and Fort Donelson, where the Tennessee and Cumberland Rivers provided transportation for Union troops, and a route for Union gunboats to enter the battle.
Federal forces used the mountainous terrain to their advantage when outflanking and capturing the Cumberland Gap in 1862, and likewise used the rugged terrain of eastern Kentucky to shield their subsequent retreat in October 1862. The late 1862 invasion of Kentucky by Confederates and subsequent Perryville Campaign were again guided by topography, transportation routes, and also water supply issues, as the state was in a deep drought at the time. The Perryville Campaign ended Confederate hopes of occupying Kentucky.