technical regulations Fortification : camouflage for artillery / prepared under direction of the Chief of Engineers technical regulations Fortification : explosives and demolitions / prepared under direction of the Chief of Engineers technical regulations Fortification : principles of field fortification / prepared under direction of the Chief of Engineers technical regulations Fortification : proctected shelters / prepared under direction of the Chief of Engineers technical regulations Fortification : standard types and execution of field fortifications / prepared under direction of the Chief of Engineers technical regulations Fortification : field fortification for artillery / prepared under direction of the Chief of Engineers technical bulletin / war department Electric wiring document / war department, office of the chief of staff Field service regulations, United States Army, 1914 / War Department, Office of the Chief of Staff training regulations Chemical warfare service / War Department : The technique of chemical weapons / War Department training regulations Chemical warfare service / War Department : Drill, the chemical squad, platoon and company (4-inch and 4.2-inch chemical mortar) / War Department army regulations. military school Chemical warfare service / War Department : Chemical warfare board / War Department army regulations. military school Chemical warfare service / War Department : General provisions / War Department