The Civil War in the East

3rd Delaware Infantry Regiment

The 3rd Delaware Infantry Regiment lost 7 Officers and 46 enlisted men killed or mortally wounded and 2 officers and 80 enlisted men to disease during the Civil War.  


It is honored by a monument at Antietam.

Monument to the 3rd Delaware Infantry Regiment at Antietam


December 30, 1861 - May 15, 1862

Organized at Camden


Ordered to Washington, D.C. and attched to Slough's Brigade, Defenses of Washington

May 28-30

Defense of Harper's Ferry attached to Slough's 2nd Brigade, Sigel's Division, Dept. of the Shenandoah

June - July

Operations in the Shenandoah Valley attached to 2nd Brigade, 2nd Division, 2nd Army Corps, Army of Virginia


Attached to 3rd Brigade, 2nd Division, 2nd Army Corps, Army of Virginia

August 9

Battle of Cedar Mountain

August 16-
September 2

Pope's Campaign in Northern Virginia

August 23-24

Sulphur Springs

August 29


August 30

Bull Run and Sulphur Springs

September 1


September 6-22

Maryland Campaign. Attached to 3rd Brigade, 2nd Division, 12th Army Corps, Army of the Potomac

September 14

Battle of South Mountain

September 16-17

Battle of Antietam

The regiment was commanded by Colonel Arthur Maginnis until he was wounded. Captain William J. McKaig then took over.


From the monument:

"This regiment, worn down from active service in the second Manassas Campaign, went into action Sept. 17, 1862 with only five officers and 120 men. It started out on the right of the Union line in front of the West Woods. After heavy action along the Hagerstown Pike, it helped repulse Confederate counter attack following rout of Sedgewick's Division. Final position of the regiment, 65 yards North of this point.

                   Officers  Men
Killed                1         5
Wounded         2         9
Total  17 of 125 engaged


Duty at Frederick, Md.; Relay House, Md., and Elysville, Md., guarding R. R., and garrison duty in Middle Dept. attahed to Defenses of Baltimore, Md., 8th Army Corps, Middle Dept.



Attached to 3rd Separate Brigade, 8th Army Corps



Ordered to Join Army of the Potomac in the field; attached to 2nd Brigade, 4th Division, 5th Army Corps

May 29-June 15

Rapidan Campaign

May 29-31


June 1-12

Battle of Cold Harbor

June 16-18

Assault on Petersburg

June 16

Siege of Petersburg

July 30

Mine Explosion, Petersburg (Reserve)

August 18-21

Weldon R. R. Attached to 3rd Brigade, 2nd Division, 5th Army Corps

September 29-
October 2

Poplar Springs Church

October 27-28

Boydton Plank Road, Hatcher's Run

December 7-12

Warren's Raid on Weldon R. R.


February 5-7

Dabney's Mills, Hatcher's Run

March 28-April 9

Appomattox Campaign

March 29

Lewis Farm, near Gravelly Run

March 30-31

Boydton and White Oak Roads

April 1

Battle of Five Forks

April 2

Fall of Petersburg

April 3-9

Pursuit of Lee

April 9

Appomattox Court House. Surrender of Lee and his army.

May 1-12

March to Washington, D.C.

May 23

Grand review

June 3

Mustered out

About the Author • ©2015 Steve Hawks