why did the battle of antietam happen
The Battle of Antietam was fought on September 17, 1862 between the Union and the Confederacy during the Civil War. It took place near Sharpsburg, Maryland. The Southern forces were led by General Robert E. Lee and the Northern forces were led by General George B. McClellan.General Robert E. Lee Goes on the Offensive.he Battle of Antietam was fought on September 17, 1862 between the Union and the Confederacy during the Civil War. It took place near Sharpsburg, Maryland. The Southern forces were led by General Robert E. Lee and the Northern forces were led by General George B. McClellan. General Robert E. Lee Goes on the Offensive.