The monument to the 1st Massachusetts Cavalry Regiment is south of Gettysburg on Sedgwick Avenue. (39.796061 N, 77.234161 W; Google map; Tour map: Sedgwick Avenue) It was erected in 1885 by the Commonwealth of Massachusetts.

The 1st Massachusetts Cavalry was commanded at the Battle of Gettysburg by Lieutenant Colonel Greely S. Curtis. It brought 292 men to the field, and suffered no losses. The regiment was temporarily attached to the 6th Corps Headquarters.

Monument to the 1st massachusetts Cavalry at Gettysburg

Monument to the 1st Massachusetts Cavalry. The monument to Major General John Sedgwick is a short distance away.

From the monument:

First Mass. Cavalry
3d Brigade
2nd Cavalry Division
on detached service

See more on the First Massachusetts Cavalry Regiment during the Civil War