Because a set of Lee's orders had been accidentally dropped in the field and shown to McClellan, who was able to see that Lee's divisions were widely separated.
The North won the battle of Anietam on September 17, 1862.
The union won the battle Antietam in Maryland. It was the bloodiest battle in the war.
Both Antietam and Gettysburg were fought in the North.
Yes on 17 September 1862 in the bloodiest single day of battle in American History to date at what is called the Battle of Antietam.
The Battle of Antietam was fought on land between Sharpsburg Maryland and the Antietam Creek on September 17th, 1862. The Union won this battle.
north
Antietam was a North win, but not a good one as Gen. McClellan let Robert E Lee escape
The result or outcome of the Battle of Antietam(in which Union Army won) was freeing of slaves after Lincoln's Emancipation Proclamation.
George McClellan (Union)
because he "won" the battle of Antietam
Antietam
Antietam