The 8th New York Heavy Artillery Regiment lost 19 officers and 342 enlisted men killed and mortally wounded and 4 officers and 298 enlisted men by disease during the Civil War. The regiment is honored by a monument in the National Cemetery on the Cold Harbor battlefield.
|July||Organized at Lockport, N.Y., as the 129th Volunteer Infantry Regiment under Colonel Peter Porter, Lieutenant Colonel Willard Bates and Major James M. Willett|
|October 19||Designation changed to 8th New York Heavy Artillery Regiment|
|October||Garrison duty at Forts Federal Hill, Marshall and McHenry in Baltimore, Maryland attached to Defenses of Baltimore, Md., 8th Army Corps, Middle Department|
|January||Attached to 2nd Separate Brigade, 8th Army Corps|
|July 10||At Maryland Heights, attached to 2nd Brigade, Maryland Heights Division, Army of West Virginia|
|August 3||At Baltimore attached to 2nd Separate Brigade, 8th Army Corps|
|February||At Green Springs Run and Romney for a few days. Companies L and M join Regiment at Baltimore|
|May 12||Ordered to Join Army of the Potomac in the field attached to Tyler’s Heavy Artillery Division, 2nd Army Corps|
|May 15-29||Attached to 4th Brigade, 2nd Division, 2nd Army Corps|
|May 23-26||North Anna River|
|May 26-28||On line of the Pamunkey|
The monument in the National Cemetery at Cold Harbor lists the names of the men killed or mortally wounded in the fighting on June 3. They include Colonel Porter. Lieutenant Colonel Bates was promoted to colonel. Major Willett was shot in the right side but survived and was promoted to lieutenant colonel. Captain Joel B.G. Baker of Company B was promoted to major.
|June 16-18||First Assault on Petersburg|
|June 16 to April 2||Siege of Petersburg|
Jerusalem Plank Road
Colonel Bates was mortally wounded, shot in the stomach, on June 22. Lieutenant Colonel Willett took over the regiment.
|June 26||Attached to 2nd Brigade, 2nd Division, 2nd Army Corps|
|July 1||Lieutenant Colonel Willett was promoted to colonel.|
|July 27-29||Demonstration north of the James|
|July 27-28||Deep Bottom|
|July 30||Mine Explosion, Petersburg (Reserve)|
|June 24||Colonel Bates died at the City Point Hospital of his wound from June 22. Lieutenant Colonel Willett was promoted to colonel.|
|August 13-20||Demonstration north of the James|
|August 14-18||Strawberry Plains, Deep Bottom|
|August 25||Ream’s Station|
Boydton Plank Road, Hatcher’s Run
Colonel Willett took command of the brigade while Major Baker commanded the regiment.
|January 14||Colonel Willett resigned due to “pressing private reasons” and the results of his wound from Cold Harbor. Lieutenant Colonel Baker was promoted to colonel.|
|March 25||Watkin’s House|
|March 28-April 9||Appomattox Campaign|
|March 31||Crow’s House|
|April 2||Fall of Petersburg|
|April 6||Sailor’s Creek|
|April 7||High Bridge and Farmville|
Appomattox Court House
Surrender of Lee and his army.
|May 2-12||March to Washington, D.C.|
|May 23||Grand Review|
|June 5||Mustered out. Veterans and Recruits of Companies G, H, I and K transferred to 4th New York Heavy Artillery; Companies A, B, C, D, E and F to the 10th New York Infantry, becoming companies H, G & I. Colonel Baker took command of the 10th New York Infantry.|