Approximately 110,000 soldiers of the Union and Confederate armies fought along the banks of Antietam Creek in the bloodiest single-day battle in American history. In 12 hours of fighting, approximately 23,000 men fell, either killed, wounded, or missing, forever scarring the landscape around the town of Sharpsburg. Established as the Antietam Battlefield Site in 1890, Antietam National Battlefield became a National Park Service landmark...