Battery Rock is a limestone bluff located at Mile 860 of the Ohio River in Hardin County, Illinois, across from Caseyville, Kentucky. The bluff is a prominent navigational landmark along the river. The site played a role in several conflicts during the Civil War. In 1862, the Union Army based its troops at Battery Rock during a standoff with Confederate troops at Caseyville; the standoff ended when the Union troops moved to Caseyville, found that the Confederates had left the town, and punished the rebellious residents. The bluff also played a role in Confederate general Stovepipe Johnson's attack on riverboats in 1864. During the attack, boats used the landing at Battery Rock as a safe harbor and a place to monitor the situation. In addition, two Union recruiters from Kentucky used the bl