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In the Battle of Antietam there were 22,700 casualties.12,400 Union10,300 ConfederateNote: This statistic does not include the number of horses killed
2,108 Union men died in battle of Antietam
650,000 men fought for the union in the battle of Antietam.
There were over 23,000 men killed, wounded, or missing after the end of the Battle of Antietam.
Monuments which remember and honour the men who fought there. The Northern States erected 71 monuments to remember the regiments that fought with the Army of the Potomac that day.
The Union Army had about 105,000, but did not use all of them. Probably around 70,000 actually fought. If they had used all the men they had there, they could have ended the war then and there. The Rebels had around 35,000.
The battle of Antietam, Maryland was the worst single day battle with about 27,000 casualties in 12 hours. There were several other battles with as many or more casualties, but they were multi-day events.
220
around 3,900 men
union (AKA:north)
about 100,000 Union and 85,000 Confederacy men
The British had about 6,000 men. The Americans had about 11,000 men.