Battle of Antietam

The Battle of Antietam (pron.: /ænˈtiːtəm/) also known as the Battle of Sharpsburg, particularly in the South, fought on Wednesday, September 17, 1862, near Sharpsburg, Maryland, and Antietam Creek, as part of the Maryland Campaign, was the first major battle in the American Civil War to take place on Union soil. It was the bloodiest single-day battle in American history, with about 23,000 dead, wounded and missing on both sides combined.

• http://en.wikipedia.org/wiki/Battle of Antietam
• Spilling, M., 2010, Battles that Changed History: Key Battles that Decided the Fate of Nations: Amber Books, London, 448p