Bodies of fallen troops and a crashed gun lie on the field after the Battle of Antietam, the bloodiest one-day battle of the American Civil War, near Sharpsburg, Md., on Sept. 17, 1862.  The Dunker Church, a German Baptist Brethren, is riddled with artillery in the background.  The Battle of Antietam, led by Confederate Army Gen. Robert E. Lee, was the first major battle on Northern soil.  Casualties from both sides mounted to about 23,000.  The Confederates called it the Battle of Sharpsburg.  The Union army was under the command of Gen. George Brinton McClellan.  (AP Photo/Mathew B. Brady)
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