On July 8, 1863, Confederate General John Hunt Morgan and 2,000 cavalrymen crossed the Ohio River into Indiana from Brandenburg, Kentucky, on two captured steamboats, beginning the Indiana segment of his Great Raid of 1863, the only major military activity in Indiana during the Civil War. For six days the Raiders rode through southern Indiana. On July 9, the Battle of Corydon occurred when Morgan's men outflanked 450 men of the Indiana Legion, or local Home Guards, and after entering Corydon they plundered to their "hearts' content." On July 10, the Raiders entered Salem, looted the businesses, and burned the railroad depot, while a Union cavalry force of 4,000 led by General Edward H. Hobson pursued them and Governor Oliver P. Morton at Indianapolis asked General Lew Wallace to command 13 regiments of "Minutemen." The Raiders then passed through Vienna and advanced into Lexington, Indiana, at dusk. On July 11, they were turned back at Vernon, the first and only time they were forced to fall back while in Indiana, and Morgan camped that night in Dupont. On July 12, the Raiders arrived in Versailles with Hobson's cavalry four hours behind, left at 4 p.m. heading east, and camped for the night in an area now known as St. Paul, two miles south of 1,800 Union soldiers sleeping in railroad boxcars. On July 13, though tired from rigorous travel and lack of sleep, they continued east, devastated the countryside, and crossed the bridge into Harrison, Ohio, ending the Indiana portion of Morgan's 1,000-mile raid.