These Rare, Amazing Civil War Photos Are Absolutely Haunting

13. Battle Of Antietam

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The Battle of Antietam was the bloodiest single-day battle in U.S. history, fought near a church near Sharpsburg, Maryland. That one day of fighting would leave over 22,000 soldiers dead, injured, or missing and prove enough of a victory that Lincoln would feel confident enough to make the Emancipation Proclamation, changing the course of the war.