15th Regiment, New York Engineers

Organized at Washington, D. C., October 25, 1861, from 15th Regiment New York Infantry. Attached to Engineer Brigade, Army of the Potomac.

SERVICE.-Duty at Washington and Alexandria till March, 1862. Moved to the Virginia Peninsula March. Siege of Yorktown April 5-May 4. Advance up the Peninsula and constructing bridges on the Chickahominy River May. Seven days before Richmond June 25-July 1. Seven Pines June 27. White Oak Swamp and Charles City Cross Roads June 30. Malvern Hill July 1. At Harrison Landing till August 16. Moved to Washington, D. C., August 16-22. Maryland Campaign September-October. Rappahannock Campaign November, 1862, to June, 1863. Battle of Fredericksburg, Va., December 12-15. "Mud March" January 20-24, 1863. Chancellorsville Campaign April 27-May 6. Operations about Franklin's Crossing April 29-May 2. Maryes Heights, Fredericksburg, May 3. Salem Heights May 3-4. Banks' Ford May 4. Deep Run Ravine June 5-13. Mustered out June 25, 1863. Three years men consolidated to a Battalion of three Companies, "A," "B" and "C." Company "D" assigned December 9, 1863; Company "E" assigned March, 1864, and other seven Companies November, 1864. Gettysburg (Pa.) Campaign June-July, 1863. Battle of Gettysburg July 1-3. Bristoe Campaign October 9-22. Advance to line of the Rappahannock November 7-8. Mine Run Campaign November 26-December 2. Rapidan Campaign May-June, 1864. Battles of the Wilderness May 5-7; Spottsylvania Court House May 5-21; North Anna River May 23-26. On line of the Pamunkey May 26-28. Totopotomoy May 28-31. Cold Harbor June 1-12. Crossing of James River June 15. Before Petersburg June 16-18. Siege operations against Petersburg and Richmond June 16, 1864, to April 2, 1865. Deep Bottom July 27-28, 1864. Hatcher's Run February 5-7, 1865. Appomattox Campaign March 28-April 9. Fall of Petersburg and Richmond April 2-3. Pursuit of Lee April 3-9. Appomattox Court House April 9. Surrender of Lee and his army. Expedition to reinforce General Sherman April 23-29. Moved to Washington, D. C., May 2-15. Grand Review May 23. (Cos. "A," "B" and "H" with Terry's Expedition to Fort Fisher, N. C., January 3-15, 1865. Capture of Fort Fisher January 15. Capture of Wilmington, N. C., February 22. Campaign of the Carolinas March 1-April 26. Occupation of Goldsboro and Raleigh. Bennett's House April 26. Surrender of Johnston and his army. Duty in Dept. of North Carolina till June.) Mustered out Companies "E," "F," "G," "H," "I," "K," "L" and "M" at Washington, D. C., June 13, 1865; Companies "C" June 14, 1865, and Companies "A," "B" and "D" July 2, 1865.

Regiment lost during service 7 Enlisted men killed and mortally wounded and 3 Officers and 119 Enlisted men by disease. Total 129.

Predecessor unit: 15th REGIMENT INFANTRY.

Organized at New York City and mustered in for two years service June 17, 1861. Left State for Washington, D. C., June 29. Duty as Infantry in the Defences of that city till October, 1861. Attached to McCune's Brigade July 30 to August 4, 1861. Franklin's Brigade, Division of the Potomac, to September 26, and to Newton's Brigade to November, 1861. Designation of Regiment changed to 15th New York Engineers October 25, 1861. (See 15th Engineers.)