Indianapolis in the American Civil War Indianapolis in the American Civil War During the American Civil War, Indianapolis, the state capital of Indiana, was a major base of supplies for the Union. Governor Oliver P. Morton, a major supporter of President Abraham Lincoln, quickly made Indianapolis a gathering place to organize and train troops for the Union army. The city became a major railroad hub for troop transport to Confederate lands, and therefore had military importance. Twenty-four military camps were established in the vicinity of Indianapolis. Camp Morton, the initial mustering ground to organize and train the state's Union volunteers in 1861, was designated as a
Western Theater of the American Civil War formally surrendered his force on May 9. Wilson's cavalry officially took control of Tallahassee, Florida, on May 20, the last Confederate state capital east of the Mississippi to be captured, completing the Western Theater operations. A detachment of Wilson's cavalry captured Confederate President Jefferson Davis on May 10 near Irwinville, Georgia. The costliest land battles in the western theater, measured by casualties (killed, wounded, captured, and missing), were: Western Theater of the American Civil War The Western Theater of the American Civil War encompassed major military operations in the states of Alabama, Georgia, Florida, Mississippi, North Carolina, Kentucky, South Carolina