4th New York Infantry Regiment "1st Scott Life Guards"

Organized at New York City

May 2, 1861

Companies C, D, E, F, H and K mustered in for two years United States service

May 7

Companies A and G mustered in

May 9

Companies B and I mustered in

May 15

Alfred W. Taylor mustered in as colonel, John D. McGregor as lieutenant colonel and Captain William Jameson of Company H as major

June 3

Left State for Newport News, Va. and duty there. Attached to Newport News, Va., Dept. of Virginia

July 25

Moved to Baltimore, Md. and duty there and at Havre de Grace. Attached to Dix's Command, Baltimore, Md.

June 5, 1862

Moved to Suffolk, Va., and duty there. Attached to Webber's Brigade, Division at Suffolk, 7th Army Corps, Dept. of Virginia

July 7-8

Colonel Taylor resigns. Lieutenant Colonel McGregor promoted to colonel (but not commissioned until October 10) and Major Jameson promoted to lieutenant colonel

September 8

Ordered to join 3rd Brigade, 3rd Division, 2nd Army Corps, Army of the Potomac

September 16-17

Battle of Antietam

Commanded by Lieutenant Colonel John D. McGregor.

From the monument,

"Killed at Antietam, Sept. 17, 1862

Co. A Color Sergt. A. Biering, Private John Byrnes, Private J. Corcoran, Private W. McManus;
Co. B. 1st Sergt. H. Pickham, Co. B. Capt. John S. Downs, Private J. McDonald, Private W.L. Norris, Private John Burns; Co. C. Capt. H.K. Chapman, Corporal H. Wolfe, Private James Price; Co. D. Private Philip Diehl, Private G. Frederick, Private F.H. Hausman, Private F. Wilbert; Co. E. Private Thomas Hickey, Private W. McKnight; Co. F Private F. Hermann, Private Saml. Fites; Co. G. Sergt. V.B. Carpenter, Corp. R. Aginton, Private Chas. Wolf, Private M. Hines, Private J. Stewart; Co. I Corporal E.J. Flagg, Private J. Blumenshein, Private Jas. Hunt, Private P. Riley, Private Phil Rudden, Private B. Gordon; Co. K. Sergt. S.T. Willetts, Corp. Joshua Smith, Private John Hughes, J.H. Sharrock"

September 22

Moved to Harper's Ferry, W. Va. and duty there

October 14

Captain Charles N. Kruger od Company D promoted to major

October 16-17

Reconnaissance to Charlestown

October 30-
November 17

Advance up Loudoun Valley and movement to Falmouth, Va.

December 12-15

Battle of Fredericksburg

The regiment lost 13 enlistged men killed or mortally wounded, 6 officers and 49 enlisted men wounded, including Colonel McGregor, and 6 men missing.

January 20-24, 1863

"Mud March", then at Falmouth

April 27-May 6

Chancellorsville Campaign

May 1-5

Battle of Chancellorsville

May 25, 1863

Mustered out under Colonel McGregor, Lieutenant Colonel Jameson and Major Kruger