The 61st Massachusetts Infantry Regiment lost 1 officer and 5 enlisted men killed or mortally wounded and 20 enlisted men to disease during the Civil War.

1864
August –
October
Organized at Gallop’s Island, Boston Harbor as a Battalion of 5 Companies, A – E.
October 7-12 Moved to City Point, Va. and attached to Benham’s Engineer Brigade, Dept. of Virginia and North Carolina. Engaged in Engineer duty erecting fortifications at City Point, Va. and picket duty.
November 17 Company F reported to Regiment
1862
January 5 Company G reported to Regiment
February 15 Company H reported to Regiment
March 15 Companies I and K reported to Regiment
March 28 Ordered to Petersburg and Independent Brigade, 9th Army Corps, Army of the Potomac
March 28-April 9 Appomattox Campaign
April 2 Assault on and fall of Petersburg
April 3 Occupation of Petersburg
April 3-9 Pursuit of Lee; attached 1st Brigade, 2nd Division, 5th Army Corps, Army of the Potomac
April 12 Moved to City Point
April 16-20 March to Burkerville
May 1-12 March to Washington, D.C.
May 23 Grand Review
June 6-8 Companies A to E moved to Reedville, Mass.
June 17 Companies A to E discharged. Companies F to K organized as a Battalion and attached to 3rd Brigade, 3rd Division, Provisional Corps. Duty at Washington, D.C.
July 16 Mustered out
July 20-22 Moved to Reedville, Mass.
August 1 Discharged