Battle of Get -tysburg; 28,063

Battle of Chickamauga; 18,454

Battle of Chancerllorsville; 12,821

Battle of Spotsylvania; 9,000Battle of Antietam; 13,724

Battle of The Wilderness; 7,750Battle of Seond Manassas; 9,197

Battle of Stone's River; 11,739

Battle of Shiloh; 10,694

Battle of Fort Donelson; 16,623

Casualties from the 10 Costliest Battles of the Civil War for the Confederate