Battle of Antietam

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It was the bloodiest one day battle, ever.

Robert E. Lee: Robert Edward Lee was an American soldier best known for commanding the Confederate Army of Northern Virginia in the American Civil War from 1862 until his surrender in 1865.

George B. McClellan: George Brinton McClellan was a major general during the American Civil War and the Democratic presidential nominee in 1864, who later served as Governor of New Jersey.