- Company A - NYC and Boston, MA
- Company B - NYC
- Company C - NYC
- Company D - NYC
- Company E - NYC and Boston, MA
- Company F - NYC
- Company G - NYC
- Company H - NYC
- Company I - NYC
- Company K "Faugh-a-Ballagh" - Albany
- Mustered in: Sept.-Nov., 1861 at NYC
- Mustered out: 6/30/65 at Alexandria, VA
- Richard C. ENRIGHT
- John BURKE
- Henry FOWLER
- Richard C. BENTLEY
- John H. GLEASON
- James D. BRADY
Battle-Related
KILLED
Officers 8
Enlisted 70
WOUNDED DIED
Officers 7
Enlisted 72
WOUNDED RECOVERED
Officers 16
Enlisted 356
MISSING
Officers 2
Enlisted 153
TOTAL 684
Died of disease and other causes
Officers 1
Enlisted 63
As POW 31
TOTAL 95
TOTAL CASUALTIES: 779