Twenty-first regiment Massachusetts Infantry.
（1) Col. Augustus Morse.| Field and Staff. | Line. | Band. | companies. | Unassigned Recruits. | Totals. | ||||||||||
| A | B | C | D | E | F | G | H | I | K | ||||||
| Number on regimental rolls,— | |||||||||||||||
| Officers, | 18 | 58 | – | – | – | – | – | – | – | – | – | – | – | – | 76 |
| Enlisted men,1 | 19 | – | 25 | 111 | 110 | 110 | 100 | 119 | 102 | 115 | 107 | 117 | 129 | 29 | 1,193 |
| Totals, | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 1,269 |
| Enlisted men (included above) commissioned in regiment.2 | 9 | – | – | 5 | 3 | 2 | 4 | 3 | 1 | 3 | 2 | 3 | 2 | – | 37 |
| Enlisted men (included above) serving elsewhere within regiment. | – | – | – | 2 | 1 | 1 | – | 2 | 1 | 4 | 1 | 1 | 2 | – | 15 |
| Totals, | 9 | – | – | 7 | 4 | 3 | 4 | 5 | 2 | 7 | 3 | 4 | 4 | – | 52 |
| Actual total of members of regiment,— | |||||||||||||||
| Officers, | 18 | 58 | – | – | – | – | – | – | – | – | – | – | – | – | 76 |
| Enlisted men,3 | 10 | – | 25 | 104 | 106 | 107 | 96 | 114 | 100 | 108 | 104 | 113 | 125 | 29 | 1,141 |
| Totals, | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 1,217 |
The 21st Mass. Infantry was organized during July and August, 1861, in camp at Worcester, Mass., and was mustered into service on varying dates from August 16 to the 23d, when it left the State in command of Col. Augustus Morse, and, remaining in Baltimore a few days, moved on the 29th to Annapolis, Md., and encamped. On September 17 the regiment was remustered. In command of Lieutenant-Colonel Maggi, and forming part of General Reno's brigade, it sailed January 9 for North Carolina in the Burnside expedition. It suffered loss in the charge and capture of the enemy's works at the battle of Roanoke Island February 8, was closely engaged at New Berne March 14, and took part in the expedition to Camden April 17-22. The regiment moved with its brigade to Newport News July 6, becoming part of the 2d Brigade, Reno's Division, 9th Army Corps. Joining General Pope's forces at the Rapidan, it engaged at Manassas August 30, and met heavy loss at Chantilly September 1. It was engaged at South Mountain and Antietam, and was active at Fredericksburg, encamping afterward at Falmouth, Va. Leaving camp Feb. 9, 1863, the regiment moved to Kentucky, to serve as part of the 9th Corps in the department of the Ohio, and went into camp at Mt. Sterling, Ky., April 3, moving in July to Lexington and in August to Camp Nelson on the Kentucky River. On September 12 it left camp for Knoxville, Tenn., and engaged in action at Blue Springs October 10 and at Campbell's Station November 16. During the siege of Knoxville it took part in a charge on the morning of November 24. While encamped near Rutledge, Tenn., after the raising of the siege, all but 24 of the members of the regiment re-enlisted for another term, and January 7 left camp to spend their furlough in Massachusetts. Leaving the State March 18, on its return to duty the command joined the 9th Corps at Annapolis and became part of the 2d brigade, General Stevenson's division. It took part at the Wilderness May 6 and was active at Spotsylvania May 10, 12 and 18; it shared in the movements to North Anna and in the engagements at Cold Harbor. Reaching the vicinity of Petersburg June 16, it took part in the assault on that day and was closely engaged again on the 17th. The regiment shared afterward in the duties of the siege, taking part with its division in the charge at the ‘Crater’ July 30. On August 22 those whose term of service had expired returned to Massachusetts and were mustered out Aug. 30, 1864. The remainder, as a battalion of three companies, under command of Capt. Orange S. Sampson, still serving in the trenches, engaged in action at the Weldon Railroad in August, and at Poplar Spring Church on September 30, when Captain Sampson was killed. On Oct. 21, 1864, the command was transferred to the 36th Mass. Infantry by order of the War Department.
