Pre-induction vocational training in electrical signal communication tijding met de snelheid des bliksems : de optische telegraaf in de Nederlanden (1800-1850) / onder red. van Rob Korving en Bart van der Herten Infanterie-reglementen te velde met wenken, / door Verberne, kapitein der jagers Instruction sur le service de l'observation du tir dans les positions fortifiées Infantry drill regulations [for the] United States army 1911 Signal training : (all arms) / the War Office - Engeland Voorschrift, 26/Manuals/302 Signal training. Vol. III : Wireless station maintenance and fault finding, and associated vehicle suppression systems - Engeland Voorschrift, 26/GS Publications/562 Visuele signalen. VS 2-1118 Visuele signalen. VS 2-1118 Visuele signalen. VS 2-1118 Artillery Training. Volume IV, Part II, Pamphlet no. 9. A.A. Searchlights, Elementary Optical Principles of Searchlights. WO 7306 Signal Training Pamphlet no. 3. Part I. Waterproving of signal equipment for protection during wading. (Provisional). WO 7570