Maryland Campaign

The Maryland Campaign, or the Antietam Campaign, of September 1862 is widely considered one of the major turning points of the American Civil War.  Confederate General Robert E. Lee's first invasion of the  North was repulsed by Major General George B. McClellan and the Army of the Potomac, who moved to intercept Lee and his Army of Northern Virginia and eventually attacked it near Sharpsburg, Maryland. The resulting Battle of Antietam was the bloodiest single-day battle in  American history.
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