During the Civil War, there were 10 regiments which in various battles lost 75 men or more. They are as follows:
| Regiment and Battle | Number Killed |
| 6th Alabama Infantry at Fair Oaks, Va. | 91 |
| 1st Maine Heavy Artillery at Petersburg, Va. | 90 |
| 26th North Carolina Infantry at Gettysburg, Pa. | 86 |
| 1st South Carolina Rifles at Gains Mill, Va. | 86 |
| 1st Maine Heavy Artillery at Spotsylvania, Va. | 81 |
| 8th New York Infantry at Cold Harbor, Va. | 80 |
| 5th New York Infantry at Manassas, Va. | 79 |
| 70th New York Infantry at Williamsburg, Va. | 79 |
| 1st Missouri Infantry (Union) at Wilson’s Creek, Va. | 76 |
| 23rd U. S. Colored at Petersburg Mine, Va. | 75 |
New York led all other states in the number of troops which they furnished the Union army. The 10 leaders are as follows:
| New York | 448,850 |
| Pennsylvania | 337,936 |
| Ohio | 313,180 |
| Illinois | 259,092 |
| Indiana | 196,363 |
| Massachusetts | 146,730 |
| Missouri[1] | 109,111 |
| Wisconsin | 91,327 |
| Michigan | 87,364 |
| New Jersey | 76,814 |
| Iowa | 76,242 |
| Kentucky[1] | 75,670 |
[1]Divided states.
The leading Union and Confederate officers who were in the battles of Chickamauga, or Chattanooga, or both, are as follows:
UNION
Gen. Ulysses S. Grant
Maj. Gen. William S. Rosecrans
Maj. Gen. William T. Sherman