The Civil War in the East

37th New York Infantry Regiment "Irish Rifles"

The 37th New York Infantry Regiment lost 5 officers and 69 enlisted men killed or mortally wounded and 1 officer and 37 enlisted men to disease during the Civil War.




Organized at New York City

June 7

Mustered in for two years Federal service under Colonel John H. McCunn, Lieutenant Colonel John Burke and Major Dennis C. Minton

June 23

Left State for Washington, D.C. by steamer for duty In the Defenses of Washington, D. C. attached to Hunter's Brigade, Division of the Potomac


Cos. H and I detached as garrison at Fort Washington until March, 1862.

August 28

Private Thomas Rosney died in General Hospital at Washington of his wounds received while on picket duty at Bailey's Cross Roads, the regiment's first casualty.

September 4

Major Minton discharged. Captain Gilbert Riordan of Company A promoted to major


Attached to Richardson's Brigade, Heintzelman's Division, Army of the Potomac

October 18

Reconnaissance to Pohick Church and Occoquan

November 11

Reconnaissance to Pohick Church and Occoquan

December 12

Captain Francis McHugh died of disease in hospital in Alexandria, Virginia


January 7

Mason's Neck

Three enlisted men wounded

February 17

First Lieutenant and Adjutant Patrick Jones of Company H promoted to major with rank from January 21

January 29

Lee's House, Occoquan Bridge

The regiment lost 4 enlisted men killed or mortally wounded, 1 wounded

February 6

Lt. Colonel Burke promoted to colonel of the 63rd New York Infantry

February 17

Major Gilbert promoted to lieutenant colonel with rank from January 21

February 24

Mason's Creek

1 enlisted man was killed

March 17

Moved to the Peninsula, Va. and attached to 3rd Brigade, 3rd Division, 3rd Army Corps, Army of the Potomac

April 5-May 4

Siege of Yorktown

May 5

Battle of Williamsburg

The regiment lost Lieutenants Patrick Hays and James O'Leary, 1 other officer and 27 enlisted men killed or mortally wounded, Captains James Maguire and William De Lacy, Lieutenants Edmund Brown, John Massey, James Smith and 59 enlisted men wounded and 2 enisted men missing.

May 22-30

Lost 2 enlisted men killed near Fair Oaks

May 31-June 1

Battle of Seven Pines or Fair Oaks

The regiment lost Lieutenant William Fennon and 13 enlisted men killed or mortally wounded, Captains Andrew Diegnan and John McConnell, Lieutenant William Bird, William Green, James Keelan, James Markey, 1 other officer and 60 enlisted men wounded and 2 enlisted men missing.


Captain James O'Beirne earned the Medal of Honor for gallantly maintaining the line of battle until ordered to fall back.

June 25-July 1

Seven days before Richmond

June 25

Oak Grove near Seven Pines

June 30

Charles City Cross Roads and Glendale

The regiment lost 8 enlisted men killed or mortally wounded, 38 enlisted men wounded and 35 missing.

July 1

Malvern Hill


At Harrison's Landing attached to 3rd Brigade, 1st Division, 3rd Army Corps.

August 16-27

Moved to Fortress Monroe, then to Centreville

August 28-September 2

Pope's Campaign in Northern Virginia

August 29

Battle of Groveton

The regiment lost 3 enlisted men wounded

August 30

Bull Run

August 31

Colonel McCunn resigned to avoid court martial after criticising his commanding officer.

September 1



Duty in the Defenses of Washington

September 28

Samuel B. Hayman mustered in as colonel

October - November

Movement to Falmouth

October 8

Major Jones promoted to Colonel of the 154th New York Infantry. Captain William De Lacy of Company K promoted to major

December 12-15

Battle of Fredericksburg, Va.

The regiment was commanded by Colonel Samuel B. Hayman, and lost 9 enlisted men killed or mortally wounded, 25 enlisted men wounded and 1 man missing

Decmber 24

The regiment received the enlisted men of the 101st New York Infantry


January 20-24

"Mud March"


At Falmouth

April 27-May 6

Chancellorsville Campaign

April 29-May 1

Operations at Franklin's Crossing

May 1-5

Battle of Chancellorsville

The regiment lost Lieutenant John Kiernan and 11 enlisted men killed or mortally wounded, Captains Jonathan Barley, Richard Murphy and James O'Beirne, 1 other officer and 98 enlisted men wounded, and 1 officer and 107 enlisted men missing or captured.

June 22

Mustered out, expiration of term, under Colonel Hayman, Lt. Colonel Riordan and Major De Lacy; 225 three years men transferred to 40th Regiment New York Infantry.

About the Author • ©2015 Steve Hawks