March 1862 • to April >
Commanded by Brigadier General Jacob D. Cox
Transferred March 11, 1862 from Department of Western Virginia
| 1st Brigade | Colonel Eliakim Scammon | |
| 12th Ohio Infantry Regiment | Colonel Carr B. White | |
| 23rd Ohio Infantry Regiment | Lt. Colonel Rutherford B. Hayes | |
| 30th Ohio Infantry Regiment | Colonel Hugh Ewing | |
| 1st Ohio Independent Battery | ||
| 2nd Brigade | Colonel August Moor | |
| 28th Ohio Infantry Regiment | Lt. Colonel Godfried Becker | |
| 34th Ohio Infantry Regiment | Colonel Abram S. Piatt | |
| 37th Ohio Infantry Regiment | Colonel Edward Siber | |
| 47th Ohio Infantry Regiment | Colonel Frederick A. Poschner | |
| Simmond’s Kentucky Battery | ||
| 3rd Brigade | Colonel George Crook | |
| 11th Ohio Infantry Regiment | Colonel Charles A. DeVilliers | |
| 36th Ohio Infantry Regiment | Lt. Colonel Melvin Clarke | |
| 44th Ohio Infantry Regiment | Colonel Samuel A. Gilbert | |
| 4th Brigade | Colonel Joseph A.J. Lightburn | |
| 4th West Virginia Infantry Regiment | Colonel Joseph A.J. Lightburn | |
| 9th West Virginia Infantry Regiment | Colonel Leonard Skinner | |
| 1st West Virginia Cavalry (det) | ||
| Schambeck’s Illinois Cavalry Co. | ||
| Unattached | ||
| 8th West Virginia Infantry Regiment | ||
| 60th Ohio Infantry Regiment | Colonel William H. Trimble | |
| 2nd West Virginia Cavalry Regiment | Colonel William M. Bolles | |
| 3rd Independent Ohio Cavalry Co. | ||