The monument to Battery I, 1st New York Light Artillery is southeast of Gettysburg on East Cemetery Hill. (39.821963° N, 77.229075° W; Google map; Monument map: East Cemetery Hill) It was erected by the State of New York in 1889.
The battery was commanded at the Battle of Gettysburg by Captain Michael Wiedrich. It brought 141 men to the field serving six Ordnance Rifles, and losing 3 men killed and 10 wounded.
The battery fought on Cemetery Hill, with four guns facing east and one section of two guns facing west on the other side of Baltimore Pike. In addition to its own bronze tablet (below), Battery I has a starring role in the bronze tablet of the 73rd Pennsylvania Infantry showing it at the height of the Confederate attack on the evening of July 2, when there was hand-to hand fighting around the guns.
From the monument:
1st Regiment N. Y. Light Artillery
Capt. M. Wiedrich commanding
2nd Division 11th Corps
July 1st, 2nd. and 3rd, 1863
From the rear:
3 killed, 10 wounded.