Ordnance provision system. Ordnance entnlog (ordnance provision system) Groups A-T. G-102. Half-trade vehicles: Car, half-track M2; carrier, personnel, half-track, Mi; carrier, 81 mm mortar, half-track, M4; carriage, motor, 57 mm gun T-48; carriage, motor, 75 mm gun M3; carriage, motor, 75-mm gun M3A1: carriage, motor, 77-mm howitzer, T-30; carriage, motor. 105-mm howitzer T-19; carriage motor, mutiple gun, M13 (T1E4): carraige, motor, multiple gun, M15 (T28E1), sec. 24. Transmission and transfer case; Jan. 1, 1943.