The monument to the Tenth Maine Infantry Battalion is south of Gettysburg on the east side of Baltimore Pike near Hunt Avenue. (39.811509° N, 77.220723° N; Google map)
The monument was erected by the Sate of Maine in 1889.
Most of the 10th Maine mustered out early in 1863 at the end of their enlistments, but enough men had signed up for three years service to reorganize as a three company battalion. It was commanded at Gettysburg by Captain John Davis Beardsley, a sawmill owner from Woodstock who had enlisted along with all his mill hands. Assigned to provost guard duty, its 170 men suffered no casualties.
From the monument:
See more information about the 10th Maine Volunteer Infantry in the Civil War