Camp Douglas Prison, a Union POW site. It had one of the highest death rates among all Civil War Prisons. My uncles, George R Lewis and Elijah Peter Lewis (brothers) died there in the summer of Regiment: Arkansas E 11
Antietam Battlefield, site of the first major battle in the American Civil War to take place on Union soil. It is the bloodiest single-day battle in American history, with dead, wounded, and missing on both sides combined.