Gen. Lee had poor intelligence on the terrain, especially the flow of the Potomac River, and the battle plans were compromised when a set was lost. Despite that, due to the many errors of the Union general, the Confederates came very close to defeating a Union force twice their size.
a
The Battle of Antietam was fought September 17, 1862, before the battle of Fredricksburg which was fought on December 13, 1862.
There was nothing important about Antietam Creek itself. But the loss of the battle that suddenly blew up there was a devastating blow to the South. Not so much in pure battlefield terms. But Lincoln had been waiting for a Union win before he could credibly issue his Emancipation Proclamation - turning the war into an official crusade against slavery. This made it impossible for the British to aid the Confederates without looking pro-slavery themselves.
Rose Greenhow
No. The Anaconda Plan was the original strategy of squeezing the life out of the Confederacy by blockading the ports and sealing-off the Mississippi, before advancing into the South and defeating the starving enemy. It was considered too slow for what everyone thought would be a short war. But the Union eventually adopted a plan very like it. Antieam was the battle in Maryland that halted Robert E. Lee's spectacular run of victories that had almost brought in the British on the side of the Confederates. (Lee's unexpected defeat at Antietam put that one on the back-burner, where it remained.)
a
The Battle of Antietam was fought September 17, 1862, before the battle of Fredricksburg which was fought on December 13, 1862.
Before. Antietam was the unexpected Northern victory that gave Lincoln the credibility to issue the Proclamation without making it sound like a desperate measure.
union
Cold harbor was the only battle that the confederacy and the union knew about, before the battle began!
He was simplywaiting for a Union victory. It happened at Antietam (Sharpsburg).
The bloodiest day of the US Civil War took place at the Battle of Antietam. It was a one day battle on September 17, 1862. Combined casualties were close to 23,000. No battle fought by Americans before or after Antietam had a one day casualty rate higher.
There was nothing important about Antietam Creek itself. But the loss of the battle that suddenly blew up there was a devastating blow to the South. Not so much in pure battlefield terms. But Lincoln had been waiting for a Union win before he could credibly issue his Emancipation Proclamation - turning the war into an official crusade against slavery. This made it impossible for the British to aid the Confederates without looking pro-slavery themselves.
Rose Greenhow
Yes. This was the long-awaited Union victory that gave Lincoln the credibility to issue the Proclamation, which he did very promptly indeed - just a few days.
No. The Anaconda Plan was the original strategy of squeezing the life out of the Confederacy by blockading the ports and sealing-off the Mississippi, before advancing into the South and defeating the starving enemy. It was considered too slow for what everyone thought would be a short war. But the Union eventually adopted a plan very like it. Antieam was the battle in Maryland that halted Robert E. Lee's spectacular run of victories that had almost brought in the British on the side of the Confederates. (Lee's unexpected defeat at Antietam put that one on the back-burner, where it remained.)
Antietam. It was the unexpected Northern victory that gave Lincoln the credibility to issue this Proclamation without making it sound like a desperate measure. The battle was actually a tactical draw, not a real Northern victory, but Lincoln decided to go ahead anyway.