technical regulations Fortification : underground water and its relation to fieldworks / prepared under direction of the Chief of Engineers technical regulations Fortification : camouflage for all arms / prepared under direction of the Chief of Engineers field manual Engineer field data Military engineering : (technical training) : Equipment Bridges (excluding Bailey) / Army Council Military engineering : Demolitions and mining / Army Council Military engineering : Accommodation / Army Council military training pamphlet Field engineering (all arms) : Booby traps Military engineering : Lithographic proving / Army Council Military engineering : (technical training) / Army Council : Vol. 2: Electrical engineering Mechanical design : Gas fitting / War Department. Office of the Chief of Engineers Electrical design : Electric power supply and distribution / War Department. Office of the Chief of Engineers Electrical design : Interior electric system / War Department. Office of the Chief of Engineers