Oh, I forgot to mention--Britain also broke Enigma.
Polish 1930's Cipher Bureau would beg to disagree, having working deciphering procedures as early as in middle 30's. Turing's "Bombe" design closely followed Polish prototype cryptologic bomb and was named after it. You may want to read up about "Polish gift" Brits received after the war broke.
Polish 1930's Cipher Bureau would beg to disagree, having working deciphering procedures as early as in middle 30's. Turing's "Bombe" design closely followed Polish prototype cryptologic bomb and was named after it. You may want to read up about "Polish gift" Brits received after the war broke.