United States Regiments & Batteries > Massachusetts
The 4th Massachusetts Heavy Artillery lost 2 officers and 23 enlisted men to disease in the Civil War.
| 1864 | |
| August | Organized for one year’s service by consolidation of the 17th, 18th, 19th, 20th, 21st, 22nd, 23rd, 24th, 25th, 26th, 27th and 28th Unattached Companies Heavy Artillery. |
| November 12 | Attached to 3rd Brigade, DeRussy’s Division, 22nd Corps, Dept. of Washington and garrison duty in the Defenses of Washington, south of the Potomac |
| 1865 | |
| June 17 | Mustered out |