[yarddog]

Didn’t the British capture an enigma machine from a German Weather reporting ship in the North Atlantic?

[dr_lew]

I think they used the regular, brief, encrypted reports as a sort of Rosetta Stone, since they knew or could easily guess the plain text of them. They could scarcely believe that the Germans made such a blunder, but that’s how confident they were in the Enigma.

[Harold Shea]

I thought it was when the Americans captured

an Enigma machine from that German U-boat./s

[colorado tanker]

Yes, but the real find was the Poles had cracked the Enigma and gave machines and their codebreaking methods to the British and French before Warsaw fell. Without that amazing selfless act it would have been much harder for the British to crack the succeeding Enigma codes.

[the scotsman]

Yes.