machinist - USA Voorschrift, Technical Manual, 10-445 Corps of engineers / War Department : Communications - Military roads - USA Voorschrift, Training Regulations, No. 445-170 Corps of engineers / War Department : Combat regiment - The battalion and regiment - USA Voorschrift, Training Regulations, No. 445-19 Signal corps : Wire axis installation and maintenance within the division - USA Voorschrift, Training Regulations, No. 165-5 Air corps : Flying; general - USA Voorschrift, Army Regulations, No. 95-15 Air corps : Army railways communications system - USA Voorschrift, Army Regulations, No. 95-200 Air corps : Airdromes - USA Voorschrift, Army Regulations, 95-35 1/4-Ton 4x4 truck (Willys-Overland model MB and Ford model GPW) / War Department - USA Voorschrift, Technical Manual, 9-803 Signal Corps : Reports - USA Voorschrift, Army Regulations, No. 105-45 Signal Corps : Training films - USA Voorschrift, Army Regulations, No. 105-260 Signal Corps : Telegraph, cable and radio service - USA Voorschrift, Army Regulations, No. 105-25 Signal Corps : Fixed signal communication systems - USA Voorschrift, Army Regulations, No. 105-20
