Hooper Battery was a hilltop earthworks fortification, built for the Defense of Cincinnati during the American Civil War in Northern Kentucky by the Union Army to turn back invading Confederate troops. It was constructed to protect Cincinnati and the Ohio River valley. The battery overlooks the Licking River valley in an advantageous position. The man who was put in charge of reinforcing Cincinnati's defenses was Lieutenant Colonel J.H. Simpson of the United States Engineers to help fortify Hooper battery.