Fortieth regiment Massachusetts Infantry.
（1) Col. Burr Porter
（2) Col. Guy V. Henry
, Bvt. Brig. Gen.
U. S. Vols.
|Field and Staff.||Line.||companies.||Unassigned Recruits.||Totals.|
|Number on regimental rolls,—|
|Enlisted men (included above) commissioned in regiment.2||11||–||3||3||4||3||4||3||5||4||3||3||–||46|
|Enlisted men (included above) serving elsewhere within regiment.||–||–||1||1||–||3||–||–||1||–||1||–||–||7|
|Actual total of members of regiment,—|
The 40th Mass. Infantry was organized at Camp Stanton, Lynnfield, Mass.
, in the summer of 1862; four companies were mustered into service in August and the remainder in the early part of September; Company G, the last to be filled, being mustered September 5.
It left the State
September 8, under command of Lieut.-Col. Joseph A. Dalton
, Col. Burr Porter
, appointed September 7, taking command at Washington
on the 14th.
The regiment remained on picket and guard duty in the vicinity of Washington
during the autumn
of 1862-63; it moved to Suffolk
April 15, 1863, and occupied the city during the siege, making a reconnoissance on April 24 and another on May 3.
It took part in the operations in the vicinity after the raising of the siege, meeting the enemy at Baltimore Cross Roads July 2.
The command returned to Washington
July 11, and moving to Frederick, Md.
, joined the Army of the Potomac in the pursuit of Lee
's Army into Virginia
It was ordered, August 6, to Folly Island, S. C.
, and served in the trenches at Fort Wagner
until the evacuation by the Confederates
In November, Colonel Porter
having resigned, Capt. Guy V. Henry
, a graduate of West Point
, was appointed colonel, and took command of the regiment November 10.
Equipped as mounted infantry at Hilton Head
in January, 1864, it moved, February 4, to Jacksonville, Fla.
; engaged at Barber's Ford February 10, and at Olustee
on the 20th.
A detachment of the regiment under Captain Marshall
met with loss also at Gainesville
Unmounted, the regiment joined General Butler
's forces March 28, at Gloucester Point, Va.
, and shared in the engagements at Arrowfield Church and Drewry's Bluff
Becoming part of the 18th Corps, it joined the Army of the Potomac at Cold Harbor June 1, and went at once into action, suffering loss, engaging again actively on the 3d.
It reached Petersburg
June 15, took part in the assault on that day and shared afterward in the siege.
Relieved from duty in the trenches August 27, the regiment served for a month on provost duty at Bermuda Landing, taking part afterward in the operations about Bermuda Hundred
On March 4, 1865, it left its winter camp at Chapin's Farm for Fortress Monroe
, and shared with its brigade in the expeditions to Fredericksburg
and to White House Landing
It reached Richmond
April 3, encamping near the city, and on the 25th moved to Manchester, Va.
, where it was located until mustered out of service, June 17, 1865.
It reached Massachusetts
on the 21st, and was paid off and discharged at Readville June 30, 1865.