Field artillery - USA Voorschrift, Training Regulations, No. 430 Field artillery : Special field artillery vehicles - USA Voorschrift, Technical Regulations, No. 1305-A Coast artillery corps : Coast artillery target practice - USA Voorschrift, Training Manual, No. 2160-35 Symbols for seacoast defense fire-control maps, diagrams, and structures - USA Voorschrift, Technical Regulations, No. Corps of engineers / War Department : Combat regiment - The platoon and the company - USA Voorschrift, Training Regulations, No. 445-18 Corps of engineers / War Department : The railway battalion - USA Voorschrift, Training Regulations, No. 445-25 Radio set, type SCR-136 - USA Voorschrift, Technical Regulations, No. 1210-20 Signal : Commercial telephone, telegraph and electric time service, general - USA Voorschrift, Army Regulations, No. 105-30 Agent finance officers - USA Voorschrift, Technical Manual 14-505 Browning machine gun, caliber .50, M2, water cooled, and mounts - USA Voorschrift, Technical Manual, 9-226 37-MM AA gun matériel - USA Voorschrift, Technical Manual, 9-235 radio operator - USA Voorschrift, Technical Manual, 11-454