The 7th United States brought 153 men to the field in four companies: A, B, E and I.
From the monument:
Army of the Potomac
Second Division, Second Brigade
Seventh U.S. Infantry
Captain David P. Hancock commanding
July 2 Arrived in the morning and took position with the Brigade on the right of the Twelfth Corps. Later moved with the Brigade to the left and at 5 p.m. formed line on the right of Little Round Top. Advanced across Plum Run and to the crest of the rocky wooded hill in front near the Wheatfield and facing to the left occupied the stone wall on the edge of the woods. The Confederates having opened fire on the right flank and advanced through the Wheatfield in the rear the Brigade was withdrawn under a deadly fire of musketry on both flanks and on the rear and of shot and shell from the batteries and formed in line on the right of Little Round Top.
July 3 Remained in the same position.
Casualties: killed 1 officer and 11 men; wounded 3 offices and 42 men; missing 2 men.
See more on the 7th United States Infantry Regiment in the Civil War