The 1st New York Engineer Regiment lost 2 officers and 25 enlisted men killed or mortally wounded and 5 officers and 116 enlisted men to disease during the Civil War.

1861
Organized at New York City
October 2 Companies A to E left state for Annapolis, Md.
October 11 Companies A, B, C, D & E mustered in
October 21-November 7 Sherman’s Expedition to Port Royal, S.C. Attached to Sherman’s South Carolina Expeditionary Corps.
November 7 Capture of Forts Walker and Beauregard, Port Royal Harbor, and Hilton Head, S.C.
December 2 Company G mustered in
December 3 Company K mustered in
December 13 Company I mustered in
December 14 Companies G, I & K left State for Port Royal, S.C.
1862
January 1 Port Royal Ferry, S.C.
January Company F mustered in
January 28 Action with Commodore Tatnall’s Flotilla
February Companies F and H left State for Port Royal, S.C.
February 4 Battery Vulcan
February 19 Company H mustered in
February to April Siege operations against Fort Pulaski, Ga.
April 10-11 Bombardment and capture of Fort Pulaski
April Attached to District of Hilton Head, Dept. of the South
June 1-28 Operations on James Island
June 10 and 13 Actions on James Island
June 16 Battle of Secessionville
June 28-July 7 Evacuation of James Island and movement to Hilton Head
September Attached to District of Hilton Head, S.C., 10th Army Corps, Dept. of the South
October 21-23 Expedition from Hilton Head to Pocotaligo, S.C. (Cos. “F” and “G”)
October 22 Coosawhatchie, Colton’s and Frampton’s Plantation
November Duty at Hilton Head, S.C.
1863
April Operations on Folly Island, S.C., against Morris Island and Charleston
July 10 Attack on Morris Island
July 11 and 18 Assaults on Fort Wagner, Morris Island
July 18-
September 7
Siege of Forts Wagner and Gregg, Morris Island, and against Fort Sumter and Charleston

Company K built Fort Duane at Beaufort, S.C., summer 1863

August 17-23 Bombardment of Fort Sumter and Charleston
August 26 Vinegar Hill
September 7 Capture of Forts Wagner and Gregg
October 26-November 9 Bombardment of Fort Sumter
November Before Charleston
December At Hilton Head, S.C.
1864
April 8 Companies ordered to Gloucester Point. Va. Attached to Engineer Brigade, 10th Army Corps, Army of the James, Dept. of Virginia and North Carolina. Companies L and M in the field.

Companies A, C, G & I remained in the Dept. of the South to June, 1865

May 4-28 Butler’s operations on south side of the James River and against Petersburg and Richmond
May 6-10 Swift Creek
May 12-16 Operations against Drury’s Bluff
May 16-June 15 Bermuda Hundred
June 15-18 Assaults on Petersburg
June 16 to April 2 Siege operations against Petersburg and Richmond
July 3 Detachment in Dept. of the South participated in skirmish at King’s Creek
July 30 Mine Explosion, Petersburg
September – October Construction of Fort Hell before Petersburg
October – December Construction of Dutch Gap Canal
September 28-30 Chaffin’s Farm, New Market Heights
October 27-28 Fair Oaks
November 28-30 The Hatch Expedition up Broad River, S.C. (Detachment in Dept. of the South)
November 30 Battle of Honey Hill (Detachment in Dept. of the South)
December 6 Deveaux’s Neck (Detachment in Dept. of the South)
1865
April 2-3 Fall of Petersburg and Richmond
April 3 Occupation of Richmond
June Rebuilt Mayo’s Bridge
June 30 Mustered out