One of the most famous accounts of Ketchum grenades use occurred during the Union assault near the Confederate works referred to as the "Priest Cap" in Port Hudson, Louisiana. The New York troops threw Ketchum grenades over the entrenchments into the works of the Confederates. The defending Confederates figured out that if the plunger didn't strike at the correct angle the grenade would fall harmlessly onto the ground. Lt. Howard C. Wright described the scene from the Confederate side of the assault: