what was the deadliest battle in the civil war
Ten Deadliest Battles of the Civil War. 1.) Apx. 51,000 casualties. The Battle of Gettysburg (PA), July 1-3, 1863. 2.) Apx. 34,624 casualties. The Battle of Chickamauga (GA), September 19-20, 1863. 3.) Apx. 30,000 casualties. The Battle of Spotsylvania Courthouse (VA), May 8-21, 1864.