Signal corps field manual : Signal corps operations 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 Gunnery for seacoast artillery - USA Voorschrift, Training Manual, 2160-30 Tractor, Crawler, Diesel, 70 to 90-DBHP, Standard, Caterpillar D7, 74-In. Gage, with La Plant-Choate R-76R, Angledozer and Le Tourneau R-7, Power Control Unit. (Serial Nos. … Service of the piece : Multiple machine gun mounts - USA Voorschrift, Field Manual, 44-57 Jungle operations - USA Voorschrift, Field Manual, 31-30 Supply of ground units by air - USA Voorschrift, Basic Field Manual, 31-40 Service of the piece 40-mm fire unit - USA Voorschrift, Field Manual, 44-60 Amphibious operations embarkation and ship loading (unit loading officer) - USA Voorschrift, Field Manual, 60-30 Airmobile operations - USA Voorschrift, Field Manual, 57-35