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 The Battle 
                  of Antietam Creek, 1862, is known as the bloodiest single day 
                  in American history. One year before Gettysburg, General Robert 
                  E. Lee fought to a standoff against the Union army. There were 
                  23,100 casualties; the Piper House and barn were used as a field 
  hospital where Confederate and Union soldiers were treated.  |