First regiment Massachusetts Infantry.
| companies. | ||||||||||||||
| Field and staff. | Line. | A | B | C | D | E | F | G | H | I | K | Unassigned Recruits. | Totals. | |
| Killed and died of wounds,— | ||||||||||||||
| Officers, | 1 | 7 | – | – | – | – | – | – | – | – | – | – | – | 8 |
| Enlisted men, | – | – | 14 | 8 | 9 | 11 | 6 | 11 | 12 | 18 | 7 | 12 | – | 108 |
| Totals, | – | – | – | – | – | – | – | – | – | – | – | – | – | 116 |
| Missing in action, | – | – | – | – | – | – | – | – | – | – | – | – | – | – |
| Died by accident or disease,— | ||||||||||||||
| Officers, | 1 | – | – | – | – | – | – | – | – | – | – | – | – | 1 |
| Enlisted men,1 | 1 | – | 4 | 8 | 4 | 5 | 3 | 7 | 2 | 4 | 9 | 6 | 2 | 55 |
| Totals, | – | – | – | – | – | – | – | – | – | – | – | – | – | 56 |
| Died as prisoners,— | ||||||||||||||
| Officers, | – | – | – | – | – | – | – | – | – | – | – | – | – | – |
| Enlisted men, | – | – | – | – | – | – | 3 | – | – | 2 | 1 | 1 | – | 7 |
| Total losses,— | ||||||||||||||
| Officers, | 2 | 7 | – | – | – | – | – | – | – | – | – | – | – | 9 |
| Enlisted men,2 | 1 | – | 18 | 16 | 13 | 16 | 12 | 18 | 14 | 24 | 17 | 19 | 2 | 170 |
| Totals, | – | – | – | – | – | – | – | – | – | – | – | – | – | 179 |
| 1861. | ||||||||||||||
| July 18, Blackburn's Ford, Va., | – | 1 | – | – | – | – | – | – | 5 | 6 | 1 | – | – | 13 |
| July 21, Bull Run, Va, | – | 1 | – | – | – | – | – | – | – | – | – | – | – | 1 |
| 1862. | ||||||||||||||
| April 26, Yorktown, Va., | – | – | – | – | – | – | – | – | – | 4 | – | – | – | 4 |
| May 5, Williamsburg, Va., | – | – | 3 | 1 | – | 2 | 1 | 1 | – | – | 2 | – | – | 10 |
| June 25, Fair Oaks or Oak Grove, Va. | – | – | 2 | – | – | 1 | 3 | – | 1 | – | – | 5 | – | 12 |
| June 30, Glendale, Va., | 1 | 1 | 3 | – | 1 | 3 | – | – | 4 | – | 1 | 5 | – | 19 |
| Aug. 29, Manassas or Bull Run, 2d, Va. | – | 1 | – | 2 | 1 | 1 | – | 4 | – | 4 | 2 | – | – | 15 |
| Dec. 13, 14, Fredericksburg, Va., | – | – | – | – | 1 | 1 | – | – | 1 | – | – | – | – | 3 |
| Place unknown, | – | – | 1 | – | – | – | – | – | – | – | – | – | – | 1 |
| 1863. | ||||||||||||||
| May 2, 3, Chancellorsville, Va., | – | 1 | – | 1 | 1 | 2 | 1 | 3 | – | 2 | 1 | – | – | 12 |
| July 1-3, Gettysburg, Pa, | – | 1 | 4 | 4 | 4 | 1 | 1 | 3 | 1 | 1 | – | 1 | – | 21 |
| Nov. 27, Locust Grove, Va., | – | – | – | – | 1 | – | – | – | – | – | – | – | – | 1 |
| Place unknown, | – | – | – | – | – | – | – | – | – | – | – | 1 | – | 1 |
| 1864. | ||||||||||||||
| May 6, Wilderness, Va., | – | – | 1 | – | – | – | – | – | – | – | – | – | – | 1 |
| May 12, Spotsylvania, Va., | – | 1 | – | – | – | – | – | – | – | 1 | – | – | – | 2 |
