During the Civil War, Camp Chase, named for Salmon P. Chase, the Secretary of the Treasury under President Abraham Lincoln and a former governor of Ohio, was home to a military training camp for Union troops and one of the largest Confederate prisons. The first occupants of Camp Chase’s prison were political prisoners, but during the Civil War, as many as 25,000 Confederate soldiers passed through the camp, which was built to house 3,500-4,000 prisoners. By the end of January 1865, the prison held more than 9,400 prisoners. Today, the only remnant of the camp are the graves of 2,260 Confederate soldiers, buried in quarters so tight their headstones nearly touch one another. In the middle stands a monument — with the word “Americans” engraved into its “memorial arch.”