Battle of Antietam/Definition

This article contains just a definition and optionally other subpages (such as a list of related articles), but no metadata. Create the metadata page if you want to expand this into a full article.

Battle of Antietam [r]: American Civil War battle on September 17, 1862, ending Robert E. Lee's first invasion of the North; called Battle of Sharpsburg in the South; most casualties of any single day in the war