Union victory.
However they failed to pursue and destroy the Confederates, and McClellan was fired.
Union
Tactically a draw. But the Confederates ended by retreating, so the Union claimed it as a victory.
Unfortunately it was but it also was the South's first attack on the North that resulted in a Union victory.
The Union. It was the first substantial Union victory in the Eastern theatre.
the battle was a strategic union victory.
fire McClellan
The Union Victory in the Battle of Antietam.
While it wasn't immediately following, the Battle of Antietam and the Union victory there gave President Lincoln the push to issue the proclamation. The Emancipation Proclamation was issued on January 1, 1863.
The outcome of the battle of Antietam motivated Lincoln to release the Emancipation proclamation.
When it was won by the Union, Lincoln used the victory to promote his idea of stopping slavery.
He was simplywaiting for a Union victory. It happened at Antietam (Sharpsburg).
The South lost a chance to gain support from Britian and France.