It also contains details of the RAF Bomber offensive electronic warfare with the Luftwaffe that used devices such as Window, Gee, Oboe, H2S and aircraft interception (AI) radar.
It features interviews and demonstrations with Jones, Arnold Wilkins, John Randall and Harry Boot, Bernard Lovell, Donald Bennett, Richard Philipp and others.
Interviewees include Hanna Reitsch, Adolf Galland, Frank Whittle, Stanley Hooker, Constance Babington Smith and Albert Speer.
This episode covers the story of the Enigma machine and the Lorenz cipher and how, after valuable initial work by the Polish intelligence service Biuro Szyfrów (BS4) and the French, the codes were broken at Bletchley Park, including some information on the Colossus computer that was still secret when the programme was made.
This documentary — produced by Johnson and presented by Woollard — is a detailed look into the Battle of the Atlantic, the technical developments and tactics used by both sides during the long and difficult campaign.
Contributions are from Donald Macintyre, Patrick Beesly, Carl Emmermann, Humphrey de Verd Leigh, Bernard Lovell, Hans Meckel and Hartwig Looks.