Field Service Pocket Book Part I. Pamphlet 5. Signal Codes Signal training : Visual Signalling - Engeland Voorschrift. 26/GS Publications/1059 Manual of visual signaling of the U.S. Signal Corps / prepared under the direction of brigadier-general A.W. Greely chief signal officer, U.S. Army by captain … Visual signaling / prepared under direction of the Chief of Infantry - USA Voorschrift, Training Regulations, No. 162-5 Visuele verbindingen. VS 11-17
