Where was the Battle of Antietam/Sharpsburg fought?
Battlefield Information GENERAL ROBERT E. LEE’S first invasion of the North culminated with the Battle of Antietam, in Maryland (or Sharpsburg, as the South called it). The battle took place on Wednesday, September 17, 1862, just 18 days after the Confederate victory at Second Manassas, 40 miles to the southeast in Virginia. Not only was this the first major Civil War engagement on Northern soil, it was also the bloodiest single day battle in American history.