41748549078781_page_235

41748549078781 | page 235 | https://thedailydialectics.com/pdfs/FIOA/41748549078781/41748549078781.pdf

Four—digit eryptograms Five-digit cryptograns REF ID:A56914 —Seeurity-tformatior more and more complicated during the war, and a body of experienced analysts was needed to solve it. Each radio net had ites ovm code, so that captured codes were never of any use. The time required to break a code…