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 phase 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 as Morgan's men outflanked 450 men of the Indiana Legion, local Home Guards, and after entering Corydon they plundered to their "hearts' content." On July 10, the Raiders entered Salem, looted businesses, and burned the railroad depot, while a Union cavalry force of 4,000 led by General Edward H. Hobson pursued them and at Indianapolis Governor Oliver P. Morton asked General Lew Wallace to command 13 regiments of "Minutemen." The Raiders passed through Vienna and reached Lexington at dusk. On July 11, at Vernon, the Raiders were turned back, 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 that night in an area now known as St. Paul, while 1,800 Union soldiers slept in railroad boxcars two miles to the north. On July 13, Morgan and the Raiders resumed their eastward course and, despite exhaustion and lack of sleep, continued to devastate the countryside before crossing the bridge into Harrison, Ohio, ending the Indiana segment of Morgan's 1,000-mile Great Raid.