For the British, breaking the Germans seemingly unbreakable codes is one of the most vital battles of the war. If they fail, there is litte to stop the German U-Boats hunting down Allied shipping in the Atlantic.

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Between 2 Wars: https://www.youtube.com/playlist?listPLrG5J-K5AYAU1R-HeWSfY2D1jy_sEssNG
Source list: http://bit.ly/WW2sources

Hosted by: Indy Neidell
Written by: Francis van Berkel
Director: Astrid Deinhard
Producers: Astrid Deinhard and Spartacus Olsson
Executive Producers: Astrid Deinhard, Indy Neidell, Spartacus Olsson, Bodo Rittenauer
Creative Producer: Joram Appel
Post-Production Director: Wieke Kapteijns
Research by: Francis van Berkel
Edited by: Mikołaj Cackowski
Sound design: Marek Kamiński
Map animations: Eastory (https://www.youtube.com/c/eastory)

Colorizations by:
Jaris Almazani (Artistic Man), https://instagram.com/artistic.man?igshidk4l2ushhbwk5
Norman Stewart - https://oldtimesincolor.blogspot.com/
Carlos Ortega Pereira, BlauColorizations, https://www.instagram.com/blaucolorizations/

Sources:
Bundesarchiv
Narodowe Archiwum Cyfrowe
IWM D 23310, A 13709, A 23513
Picture of Enigma G model, courtesy Austin Mills https://flic.kr/p/2bQ9Q
reconstructed bombe machine at Bletchley Park, courtesy Gerald Massey
Picture of Enigma M4 model displayed at Bletchley Park, courtesy Magnus Manske
Picture of John Herivel, courtesy GCHQ
From the Noun Project: Letter by Mochammad Kafi, Desk by monkik, Phone by libertetstudio, person by Adrien Coquet, Letter by Bonegolem, Table by Creative Stall, documents by Johannes Hirsekorn, sitting at desk by IYIKON, Paper by James Kopina

Soundtracks from the Epidemic Sound:
Reynard Seidel - Deflection
Johannes Bornlof - The Inspector 4
Phoenix Tail - At the Front
Johannes Bornlof - Deviation In Time
Gunnar Johnsen - Not Safe Yet
Hakan Eriksson - Epic Adventure Theme 3
Howard Harper-Barnes - London

Archive by Screenocean/Reuters https://www.screenocean.com.

A TimeGhost chronological documentary produced by OnLion Entertainment GmbH.