Handmicrofoon T-17D BC-1366M Transmitter/reciever bag, AN/CRT3A; emergency M-315-B M-315-B AS-207/CRT3 AS-207/CRT3 Visual signaling Signal Corps United States Army army regulations. military school Signal corps school / War Department army regulations. military school Signal corps school / War Department Through to 1970 : devised by the Royal Signals Institution to mark the Golden Jubilee of the Royal Corps of Signals and the Centenary of … Training regulations : Signal corps
