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WWII Bombe operator Ruth Bourne: I'd never heard of Enigma until long after the war

Alan Brown Silver badge

"BP was unable to decrypt the crucial U-boat traffic for nearly a year afterwards."

Even when unable to decrypt the traffic, the transmission themselves provided a shitload of useful metadata - RDF fixes on the origin coupled with each operator having a unique "fist" meant that they roughly knew where the subs were, etc.

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