The Union lost 12,000 killed, wounded, or captured at the Battle of Antietam.
The Union army suffered over 2,100 combat deaths at Antietam.
23,000
Battle losses are often measured in terms of casualties. Deaths as a result of combat wounds may be strung out over days and weeks. With that said, both sides in the Battle of Antietam suffered casualties close to 12,000 for each side.
23000 casualties
26,134 people died at the battle of Antietam. About 13,700 of the total casualties were Confederates and about 12,400 death were of the Union. This battle was the bloodiest day in American history. The battle of Antietam took place on September 17, 1862.
Casualties on both sides in the US Civil War Battle of Antietam were heavy. One reason that Lee's army incurred heavy losses was Lee's failure to more successfully entrench his army with the understanding that he would be fighting a defensive battle at Antietam. Figures on battle casualties on each side vary, however, many historians had the South suffering slightly more of them then McClellan's attacking forces. Figures vary on this, however, many estimates place the South's casualties at 13, 725. In comparison, Union losses were approximately 12,470, including the 12,000 Union troops that surrendered at Harper's Ferry.
2,108 Union men died in battle of Antietam
Nearly 23,000 casualties in killed, wounded, and missing resulted from the fight along Antietam Creek.
There were about 11,000 casualties
About 2,700 killed and 9,029 wounded.
The Union casualties at the Battle of Williamsburg were 2,293 men.
10,000 casualties of the union army 9,091 casualties of the south 29,495 men surrendered