October 1861 • to November >
Commanded by Brigadier General George Stoneman
| McClellan Dragoons (Illinois) | from Chicago | |
| Oneida New York Cavalry | Captain Daniel P. Mann | new from New York |
| 4th Pennsylvania Cavalry Regiment | Colonel David Campbell | from Pennsylvania |
| 11th Pennsylvania Cavalry Regiment | Colonel Josiah Harlan | from Philadelphia 10/14 |
| 5th United States Cavalry Regiment | from Defenses Washington |