The 14th New York Heavy Artillery Regiment lost 6 officers and 220 enlisted men killed or mortally wounded and 2 officers and 299 enlisted men to disease during the Civil War.

1863
Organized at Rochester, N.Y.
August 29 Companies “A” and “B” mustered in
September 11 Company C mustered in
September 12 Company D mustered in
October 13 Companies A-F ordered to New York and assigned to garrison duty in New York Harbor
October 18 Company E mustered in
October 20 Company F mustered in
December 7 Companies G and H mustered in
December 8 Companies G and H ordered to Fort Hamilton, New York Harbor
December 21 Companies I and K mustered in
December 24 Companies I and K to Fort Richmond, New York Harbor
1864
January 8 Company L mustered in
January 17 Company M mustered in at Elmira
January Companies L and M to Fort Richmond
April 23 Ordered to join Army of the Potomac in the field. Attached to Provisional Brigade, 1st Division, 9th Army Corps, Army of the Potomac
May-June Rapidan Campaign
May 5-7 Battle of the Wilderness
May 8-21 Spotsylvania Court House
May 23-26 North Anna River
May 26-28 Line of the Pamunkey
May 28-31 Totopotomy
June 1-12 Cold Harbor. Assigned to 3rd Brigade, 1st Division, 9th Army Corps
June 1-3 Bethesda Church
June 16-18 First Assault onĀ Petersburg
June 16 Siege of Petersburg begins. Attached to 2nd Brigade, 1st Division, 9th Army Corps
July 30 Mine Explosion, Petersburg
August 18-21 Weldon Railroad
September Assigned to 3rd Brigade, 1st Division, 9th Army Corps
September 29-October 2 Poplar Springs Church
October 8 Reconnaissance on Vaughan and Squirrel Level Roads
October 27-28 Boydton Plank Road, Hatcher’s Run
1865
March 25 Fort Stedman
March 28-April 9 Appomattox Campaign
April 2 Assault on and fall of Petersburg
April 3 Occupation of Petersburg
April Moved to South Side Railroad and duty at Ford’s Station
April 20-27 Moved to Washington, D.C.
June Attached to 1st Brigade, Hardin’s Division, 22nd Army Corps, Dept. of Washington, D.C.
May 23 Grand Review
August 26 Mustered out