Gen. Banks and staff honored our battery drill with their presence. Col. Geary of the Twenty-eighth Pennsylvania, and Capt. Tompkins, with the right section, had a fight with the rebels at Harper's Ferry and Bolivar Heights. Our right section, occupying Maryland Heights, fired into Bolivar and on a rebel battery on Loudon Heights. Even the drivers served an old iron gun. Col. Geary's troops, crossing the river in scows, carried the fight to Bolivar Heights. No loss of men in the right section.
SOURCE: Theodore Reichardt, Diary of Battery A, First Regiment Rhode Island Light Artillery, p. 24