During Price's raid into Missouri in 1864 the Federal defenders of Fort Davidson at Pilot Knob used grenades to drive assaulting Confederates out of the fort's ditch. When the attackers reached the fort's ditch a detail of men brought the grenades from the fort's magazine and distributed them to the men on the firing step who hurled them over the parapet and cleared the enemy from the ditch. None of the men had been previously designated as "grenadiers." A five pound Ketchum grenade, found in the area, is in the collection of the Missouri State Museum.