field engineering pamphlet British booby traps / prepared under the direction of The Chief of the Imperial General Staff Notes on supercharging for ground engineers : (aeronautical engineering series-Ground engineers) / C.E. Jones war department technical manual Railway shop battalion / prepared under direction of the Chief of engineers war department technical manual Engineer maintenance troops war department technical manual Standard stream crossing equipment / prepared under direction of the Chief of Engineers field manual Corps of engineers : explosives and demolitions field manual Camouflage / Prepared under direction of the chief of engineers field manual Field fortifications / prepared under direction of the chief of engineers field manual Corps of engineers : field fortifications field manual Armored engineer battalion field manual Reference data / prepared under direction of the chief of engineers field manual Engineer troops