Rhode Island - Union
Cavalry
| 1st Regiment Cavalry | 2nd Regiment Cavalry | 3rd Regiment Cavalry | 7th Squadron Cavalry |
Artillery
| 3rd Regiment Heavy Atr. Battery "A" | 3rd Regiment Heavy Atr. Battery "B" | 3rd Regiment Heavy Atr. Battery "C" |
| 3rd Regiment Heavy Atr. Battery "D" | 3rd Regiment Heavy Atr. Battery "E" | 3rd Regiment Heavy Atr. Battery "F" |
| 3rd Regiment Heavy Atr. Battery "G" | 3rd Regiment Heavy Atr. Battery "H" | 3rd Regiment Heavy Atr. Battery "I" |
| 3rd Regiment Heavy Atr. Battery "K" | 3rd Regiment Heavy Atr. Battery "L" | 3rd Regiment Heavy Atr. Battery "M" |
| 5th Regiment Heavy Atr. | 14th Reg. Heavy Art. (African Descent) | 1st Regiment Light Atr. Battery "A" |
| 1st Regiment Light Atr. Battery "B" | 1st Regiment Light Atr. Battery "C" | 1st Regiment Light Atr. Battery "D" |
| 1st Regiment Light Atr. Battery "E" | 1st Regiment Light Atr. Battery "F" | 1st Regiment Light Atr. Battery "G" |
| 1st Regiment Light Atr. Battery "H" | 1st Battery Light Atr. | 10th Battery Light Atr. |
Infantry
| 1st Regiment Infantry | 2nd Regiment Infantry | 3rd Regiment Infantry |
| 4th Regiment Infantry | 5th Regiment Infantry | 6th Regiment Infantry |
| 7th Regiment Infantry | 8th Regiment Infantry | 9th Regiment Infantry |
| 10th Regiment Infantry | 11th Regiment Infantry | 12th Regiment Infantry |
| Independent Company Hospital Guards |