The 31st Regiment United States Colored Troops lost 3 officers and 48 enlisted men killed or mortally wounded and 1 officer and 123 enlisted men to disease during the Cvil War.

1864
April 29 Organized at Hart’s Island, N.Y.
May Attached to 2nd Brigade, 4th Division, 9th Corps, Army of the Potomac
May-June Campaign from the Rapidan to the James River, Va. Guard trains of the Army of the Potomac through the Wilderness.
June 2-12 Battles about Cold Harbor
June 15-19 Before Petersburg
June 16 – April 2 Siege operations against Petersburg and Richmond
July 30 Mine Explosion, Petersburg
August 18-21 Weldon Railroad
September Attached to 2nd Brigade, 3rd Division, 9th Corps
September 28 Fort Sedgwick
October 27-28 Hatcher’s Run
November-March On the Bermuda front
December Attached to 3rd Brigade, 2nd Division, 25th Corps
1865
March 26-28 Moved to Hatcher’s Run
March 28-April 9 Appomattox Campaign
March 29-31 Hatcher’s Run
April 2 Fall of Petersburg
April 3-9 Pursuit of Lee
April 9 Appomattox Court House. Surrender of Lee and his army.
April-May Duty in the Dept. of Virginia
May-June Moved to Texas, and duty on the Rio Grande assigned to Dept. of Texas.
November 7 Mustered out