Visual Training : Observation and concealment - Engeland Voorschrift, 26/GS Publications/1555 civil defence handbook Wireless Instructions for Civil Defence Britain's defence services / Reference Division, Central Office of Information Army/air operations : Air reconnaissance Army/air operations Enemy equipment Notes on military railway engineering : Bridging Notes on military railway engineering : Bridging: Supplement No. 1: The unit construction railway bridge Siege artillery drill Swords and sword makers of England and Scotland / Richard H. Bezdek