The monument to Battery G of the Second United States Artillery is south of Gettysburg in Ziegler’s Grove. (Google map; Tour map: Hancock Avenue at Ziegler’s Grove) The battery brought 113 men to the field and suffered no casualties.
From the monument:
Army of the Potomac
Battery G Second U.S. Artillery
Six 12 Pounders
Lieut. John H. Butler commanding
July 2 Arrived in the afternoon with the Corps and held in reserve
July 3 Brought up to Ziegler’s Grove in rear of Third Division Second Corps on repulse of Longstreet’s Assault