Ordnance provision system. Ordnance catalog (ordnance provision system): Group F, System, data transmission, for director, M1, system, data transmission, M2 (for director, M1A1 or M2), system, data transmission. M2A1 (for director, M2), system, data transmission, M2A2 (for director, M2), (a) parts and equipment; June 29, 1938.