TheCodeBreakers
mechanism told the Swedish Foreign Office what the Germans were
really doing and thinking. They gave Foreign Minister Christian Giinther
advance warning of diplomatic notes that the German embassy was
ordered to submit to him. The cryptanalysts tell a story that, after
reading a particularly demanding note, they took the unusual step of
notifying Giinther of its contents by telephone, which they rarely used.
(Later they sent it over by the regular messenger, who wore two shoulder
holsters.) Giinther promptly went on a "hunting trip," and the German
diplomat could not serve his demand until after the weekend. By then
the Swedes had formulated a policy that
enabled them to tell the Germans, with suitable regret, that they were
unable to fulfill the requests.
And so Sweden's cryptanalysts helped her navigate the perilous
waters of neutrality while all about her raged the war.
Great Britain's main cryptanalytic agency lay within her Foreign
annaabi.ee 
