The monument to Battery H, 1st United States Artillery is south of Gettysburg in the National Cemetery. (National Cemetery tour map) First Lieutenant Chandler Eakin commanded the battery at Gettysburg until he was wounded on July 2. Second Lieutenant Philip Mason then took command. The battery was part of the First Regular Brigade of the Artillery Reserve.
From the monument:
Battery H First U. S. Artillery
Six 12 Pounders
Lieut. Chandler R. Eakin Commanding
July 2. In position on Cemetery Hill facing the Emmitsburg Road. Engaged July 2nd and 3rd. Lieut. Eakin severely wounded after his guns went into battery and the command devolved on Lieut. Philip D. Mason.
Casualties Killed 1 Man Wounded 1 Officer and 7 Men Missing 1 Man
Location of the monument
The monument to Battery H is south of Gettysburg in the National Cemetery. It is 30 yards southeast of the Soldiers National Monument, next to the boundary fence with Evergreen Cemetery. (39°49’10.7″N 77°13’51.3″W)