TheCodeBreakers
cipher alphabets were to be used, the alphabets themselves remaining
unchanged. Solution of this would have taken Pokorny at most a few
minutes. Any difficulty that he might have encountered evaporated when
a Russian station repeated in the old key a message already sent in the
new.
Meanwhile, the Germans had, more by fortune than by foresight,
developed a cryptanalytic service of their own. Ludwig Deubner, a
professor of philology at the University of Konigsberg who had enlisted in
the Landsturm as an interpreter of Russian and who was stationed at
the Konigsberg fortress, began his radio-intelligence work by translating
the cleartext intercepts that the fortress radio station picked up. As
words in cipher began to appear, he undertook to solve them. Gradually
he mastered the Russian system so that he could read messages entirely
in cipher. At the end of September, he was called to headquarters and
given charge of a group of interpreters who were to learn cryptanalysis.
annaabi.ee 
