It was dedicated in 1885 by the State of Massachusetts. This monument was one of three badly damaged by vandals in February of 2006. The criminals have never been caught.
The 11th Massachusetts Infantry was commanded at the Battle of Gettysburg by Lieutenant Colonel Porter D. Tripp. It brought 364 men to the field and lost 23 killed, 96 wounded and 10 missing.
See Lt. Colonel Tripp’s Official Report on the 11th Massachusetts in the Gettysburg Campaign
From the monument:
1st Brigade, 2nd Division, 3rd Corps
Upon this spot stood the 11th Mass. Regt. during the second day battle of Gettysburg July 2, 1863
26 were killed 93 were wounded and 10 missing.
Assisted by the state and generous friends, the survivors of the Regiment have erected upon this historic field this monumental tablet in the year 1885. All’s well that ends well.
11th Mass. Inf’t.
See more on the 11th Massachusetts Volunteer Infantry Regiment in the Civil War