The Civil War in the East

3rd Maryland Infantry Regiment


The Third Maryland Infantry Regiment lost 8 officers and 83 enlisted men killed or mortally wounded and 4 officers and 130 enlisted men to disease during the Civil War.


It is is honored by a monuments at Antietam (right) and Gettysburg (far right).

Monument to the Third MAryland Infantry Regiment at Antietam Monument to the Third Maryland Infantry Regiment at Gettysburg


August -
February 16

Companies A, B, C, D and H organized at Baltimore; Regiment attached to Dix's Division, Baltimore, Md.


4 Companies organized at Williamsport; assigned as Companies A, B, C and I; Original Companies A, B, C and D designated Companies D, E, F and G


May 11

Companies E, F, H and I broken up and distributed among Companies A, B, C, D and G; two Companies originally recruited for 4th Maryland Infantry assigned as Companies E and H. Two Companies recruited for Dix's Light Infantry and assigned as Companies I and K

May 11-23

Duty at Baltimore, Md.

May 24

Moved to Harper's Ferry, W. Va. Assigned to 1st Brigade, Sigel's Division, Dept. of the Shenandoah

May 28-30

Defense of Harper's Ferry


Attached to 2nd Brigade, 2nd Division, 2nd Corps, Pope's Army of Virginia; Operations in the Shenandoah Valley


Attached to 1st 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 21-23

Fords of the Rappahannock

August 24

Sulphur Springs

August 28-29

Plains of Manassas (Reserve)

August 30

Battle of Bull Run (Reserve)


Assigned to 2nd Brigade, 2nd Division, 12th Army Corps, Army of the Potomac

September 6-22

Maryland Campaign

September 16-17

Battle of Antietam

The regiment was commanded by Lieutenant Colonel Joseph M. Sudsburg. It brought 148 men to the field, losing one man killed, 25 wounded, and four missing in the fighting that brought it to the corner of the Dunker Church.

September 22 - December 10

Duty at Bolivar Heights

October 15

Company F organized at Euston, Md. for 9 months


Assigned to 2nd Brigade, 1st Division, 12th Army Corps

November 9

Reconnaissance to Rippen, W. Va.

December 2-6

Expedition to Winchester

December 10-14

Moved to Fredericksburg

December 14

At Stafford's Court House


January 20-24

"Mud March"

April 27

Chancellorsville Campaign

May, 1863

1st Brigade, 1st Division, 12th Army Corps, Army of the Potomac

May 1-5

Battle of Chancellorsville

June 11 - July 24

Gettysburg Campaign

July 1-3

Battle of Gettysburg

The regiment was commanded by Colonel Joseph M. Sudsburg. It brought 278 men to the field, losing one man killed and seven wounded.

July 5-24

Pursuit of Lee

July - September

At Raccoon Ford

September 2

Company F mustered out

September 24 -
October 4

Moved to Brandy Station, thence to Bealeton and to Stevenson, Ala.; attached to Army of the Cumberland; Guard duty on Nashville & Chattanooga Railroad


March - April

Veterans on furlough March and April

Non-Veterans were assigned to the 1st Brigade, 1st Division, 20th Army Corps, Army of the Cumberland

Veterans returned from their furlough to be assigned to the 2nd Brigade, 1st Division, 9th Army Corps, Army of the Potomac

Timeline for old members in the Army of the Cumberland in the Atlanta Campaign

May 1 -
September 8

Old members participated in Atlanta Campaign

May 8-11

Demonstration on Rocky Faced Ridge

May 14-15

Battle of Resaca

May 19

Near Cassville

May 22-25

Advance on Dallas

May 25

New Hope Church

May 26-June 5

Battles about Dallas, New Hope Church and Allatoona Hills

June 10-July 2

Operations about Marietta and against Kenesaw Mountain

June 11-14

Pine Mountain

June 15-17

Lost Mountain

June 15

Gilgal or Golgotha Church

June 17

Muddy Creek

June 19

Noyes Creek

June 22

Kolb's Farm

June 27

Assault on Kenesaw

July 4

Ruff's Station, Smyrna Camp Ground

July 5-17

Chattahoochie River

July 19-20

Peach Tree Creek

July 22-August 25

Siege of Atlanta

August 26 -
September 2

Operations at Chattahoochie River Bridge

September 2

Occupation of Atlanta

Timeline for Veterans in the Army of the Potomac


Regiment joined 2nd Brigade, 1st Division, 9th Army Corps, Army of the Potomac

May 3 - June 15

Campaign from the Rapidan to the James

May 5-7

Battles of the Wilderness

May 8-12


May 10

Nye River

May 12-21

Spotsylvania Court House

May 12

Assault on Salient

May 21

Ox Ford

May 23-26

North Anna River

May 26-28

On line of the Pamunkey

May 28-31


June 1

1st Brigade, First Division, 9th Army Corps

June 1-12

Cold Harbor

June 1-3

Bethesda Church

June 16-18

Before Petersburg

June 16

Siege of Petersburg


Attached to 2nd Brigade, 1st Division, 9th Army Corps

July 30

Mine Explosion, Petersburg

August 18-21

Weldon Railroad


Attached to 3rd Brigade, 1st Division, 9th Army Corps

September 29 -
October 2

Poplar Grove Church

October 27-28

Boydton Plank Road, Hatcher's Run


March 25

Fort Steadman, Petersburg

March 28

Appomattox Campaign

April 2

Assault on and fall of Petersburg

April 3

Occupation of Petersburg

April 3-9

March to Farmville

April 20-24

Moved to Petersburg and City Point

April 26-28

To Alexandria

May 23

Grand Review

May - July

Duty in the Dept. of Washington

July 31

Mustered out

About the Author • ©2015 Steve Hawks