Pedzisa mutsara unotevera: PaBletchley Park akashanda pakunzvera magwaro eEnigma kusvikira parufu rwake muna 1943. Akavaka chikwata ndokuwana mutoo uyo wakaputsa Enigma yeItaly Naval, achigadzira ruzivo rwunonzi rwakaita kuti Allied ikunde pa
Hondo yeCape Matapan. Muna 1941 Knox akaputsa Abwehr Enigma. Pakupera kwehondo, Intelligence Service Knox yakanga yaparadzira 140,800 Abwehr decrypts, kusanganisira ruzivo rwakakosha rweD-Day.