 Other than that, they had little to do, as most of the action consisted of bombardment by the group of mortar rafts that were a part of the flotilla.However, an army raiding party, assisted by several crew members from "Mound City" and four other gunboats, successfully overran a Confederate battery on the night of 1 April and spiked the guns.This was preliminary to the run by USS "Carondelet" and "Pittsburg" that was key to the Union victory.