Ordnance provision system. [Ordnance catalog (ordnance provision system): Group G, Half-track vehicles, car, half-track, M2, carrier, personnel. half-track, M3, carrier, 81 mm mortar, half-track, M4, carriage, motor, 75 mm gun, M3, carriage, motor, 75 mm howitzer, T-30, carriage, motor, 105 mm howitzer, T-19, sec. 11A, Electrical (ignition) system; Aug. 7, 1942.