The 11th Massachusetts Infantry Regiment lost 11 officers and 153 enlisted men killed or mortally wounded and 2 officers and 95 enlisted men to disease during the Civil War. It is honored by a monument at Gettysburg.

1861
June 13, Organized at Readville and mustered in
June 24 Left State for Washington, D.C.; attached to Franklin’s Brigade, Heintzelman’s Division, McDowell’s Army of Northeast Virginia
July 16-21 Advance on Manassas, Va.
July 21
Battle of Bull Run
August Attached to Hooker’s Brigade, Division of the Potomac
August 10 Moved to Bladensburg
October Attached to 1st Brigade, Hooker’s Division, Army of the Potomac
October 27 To Budd’s Ferry and duty in that area
1862
March, Assigned to the 1st Brigade, 2nd Division, 3rd Army Corps, Army of the Potomac
April 7 Ordered to Fortress Monroe, Va.
April 16-May 4 Siege of Yorktown, Va.
April 26 Affair at Yorktown (Cos. A and G)
May 5 Battle of Williamsburg
May 31-June 1 Battle of Fair Oaks, Seven Pines
June 25-July 1 Seven days before Richmond
June 25 Oak Grove, near Fair Oaks
June 29 Savage Station
June 30 White Oak Swamp and Glendale
July 1 and
August 5
Malvern Hill
August 6 – 15 At Harrison’s Landing
August 15-26 Movement to Fortress Monroe, then to Centreville
August 26-27 Bristoe Station
August 27 Kettle Run
August 28 Catlett’s Station
August 29 Groveton
August 30
Second Battle of Bull Run
September 1 Chantilly
September 2 – 13 Camp near Fort Lyon
September 14 –
October 20
Near Fairfax Seminary
October 21 -November 1 At Munson’s Hill
November 2-25 At Fairfax Station
November 10-12 Operations on Orange & Alexandria R. R.
December Rappahannock Campaign
December 12-15 Battle of Fredericksburg

1863

January 20-24 “Mud March”
February 5-7 Operations at Rappahannock Bridge and Grove Church
February 8 –
April 27
At Falmouth
April 27-May 6 Chancellorsville Campaign
May 1-5
Battle of Chancellorsville
June 11-July 24 Gettysburg Campaign
July 1-4
Battle of Gettysburg

Commanded by Lt. Colonel Porter D. Tripp. It brought 364 men to the field and lost 23 killed, 96 wounded and 10 missing.

From the monument along Emmitsburg Road at Gettysburg:

Upon this spot stood the 11th Mass. Regt. during the second day battle of Gettysburg July 2, 1863 

July 23 Wapping Heights
July 30-August 1 Moved to New York
October 17 Rejoin Corps at Union Mills
November 7-8 Advance to the Rappahannock
November 7 Kelly’s Ford
November 26-
December 2
Mine Run Campaign
November 27 Payne’s Farm
December Duty near Brandy Station

1864

February 6-7 Demonstration on the Rapidan
March Assigned to the 2nd Brigade, 4th Division, 2nd Army Corps, Army of the Potomac
May Assigned to the 4th Brigade, 3rd Division, 2nd Army Corps
May-June Rapidan Campaign
June Assigned to the 3rd Brigade, 3rd Division, 2nd Army Corps
May 5-7 Battle of the Wilderness
May 8-21 Battle of Spottsylvania Court House
May 12 Assault on the Salient at Spottsylvania C. H.
May 19 Harris Farm, Fredericksburg Road
May 23-26 North Anna River
May 26-28 Line of the Pamunkey
May 28-31 Totopotomoy
June 1-12 Cold Harbor.
June 12 Old members left front. Veterans and Recruits consolidated to a Battalion of 5 Companies.
June 16-18 Before Petersburg
June 16 Siege of Petersburg begins
June 22-23 Jerusalem Plank Road
June 24 Old members mustered out
July 11 Veterans and Recruits transferred from 16th Massachusetts Infantry
July 27-29 Demonstration on north side of the James
July 27-28 Deep Bottom
July 30 Mine Explosion, Petersburg (Reserve)
August 13-20 Demonstration on north side of the James River
August 14-18 Strawberry Plains
September 29-
October 2
Peeble’s Farm, Poplar Grove Church
October 27-28 Boydton Plank Road, Hatcher’s Run
November 5 In front of Fort Morton
December 7-11 Expedition to Weldon Railroad
1865
March 25 Watkin’s House
March 31 Crow’s House
April 2 Fall of Petersburg
April 6 Sailor’s Creek
April 7 High Bridge and Farmville
April 9
Appomattox Court House

Surrender of Lee and his army.

April 11-13 March to Burkesville and duty there
May 2-15 March to Washington, D.C.
May 23 Grand Review
June 14 Mustered out