The 40th New York Infantry served as members of DeTrobriand’s Brigade in Birney’s Division of the Third Corps, Army of the Potomac. The regiment is honored by a monument and an engraved boulder.
Location: Located to the left of the monument to the 40th New York in the Valley of Death.
Description: Boulder is inscribed with a “40″ and a diamond. It may predate the regimental monument. The inscription reads: 40th NY. There is a diamond, symbol of the Third Army Corps.