 The only Civil War battle fought in Indiana occurred in Harrison County on July 9 , 1863 , between the Harrison County Legion and Brigadier General John Hunt Morgan of the Confederate Army during Morgan 's Raid . Morgan crossed the Ohio River into Harrison County on the morning of July 9 . His crossing was contested by the Legion with artillery on the Indiana shore and an armed river boat . After Morgan opened fire with his own batteries from the opposite shore the legion quickly retreated towards Corydon . The citizens of Mauckport fled the town with most of their valuables . Morgan landed on the east side of Mauckport with two thousand cavalry and marched north burning homes , farms , and mills . The county militia made a stand to block his advance on the county seat and the resulting conflict is known as the Battle of Corydon . The battle was won by the Confederates and the town of Corydon was then sacked and stores were looted and ransomed . The battle left 4 dead , 12 wounded , and 355 captured . After the battle Morgan continued into northern Harrison County where he looted New Salisbury area with the main body of troops . Crandall and Palmyra were robbed and sacked by detachments . His forces left the county on July 10 ; they were eventually defeated and captured by Union Army . 
