About how many total people were killed at Gettysburg Chickamauga Chancellorsville Spotsylvania and Antietam?

The total casualties from the battles of Gettysburg, Chickamauga, Chancellorsville, Spotsylvania, and Antietam are significant. Gettysburg had approximately 51,000 casualties, Chickamauga around 34,000, Chancellorsville about 30,000, Spotsylvania roughly 30,000, and Antietam around 22,000. When combined, these battles resulted in an estimated total of over 167,000 casualties, reflecting the immense toll of the Civil War.