Maj. Gen. Daniel E. Sickles served as the commander of the Third Corps of the Army of the Potomac. The spot where he fell wounded is marked with a monument.
Location: Near Trostle Barn, north side of United States Avenue. The monument marks the site where General Sickles was seriously wounded by shrapnel about 6:00 P.M. on July 2, 1863.
Description: A square monument made of rough granite blocks is topped with a polished granite diamond symbol of the Third Corps. Monument is a rough and smooth three-course granite shaft topped by a polished Third Corps lozenge emblem in the form of a diamond that rests in a V-shaped top course and set on a 3.3×2.9 foot rough hewn base. The emblem has an inscription in the center. Overall height is 7 feet.