Corps of engineers : Duties and relations of engineer troops - USA Voorschrift, Training Regulations, No. 445-15 Message center-procedure - USA Voorschrift, Training Regulations, No. 160-10 Visual signaling / prepared under direction of the Chief of Infantry - USA Voorschrift, Training Regulations, No. 162-5 Dropped and pick-up airplane messages - USA Voorschrift, Training Regulations, No. 160-6 Signal communication for all arms and services - USA Voorschrift, Training Regulations, No. 160-5 Instruments : Fire-control instruments - mobile artillery - USA Voorschrift, Training Regulations, No. 310 Field artillery - USA Voorschrift, Training Regulations, No. 430 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 training regulations Cavalry : the cavalry regiment / prep. under direction of the Chief of Cavalry - United Staten War Department Training Regulations TR 425-55 training regulations Cavalry : the cavalry machine rifle squad and platoon / prep. under direction of the Chief of Cavalry - United States War Department Training Regulations … training regulations Cavalry : the cavalry machine-gun squadron / prep. under direction of the Chief of Cavalry - United Staten War Department Training Regulations TR 425-80
