January 2025

The 27th of January 2025 is the eightieth anniversary of the liberation of the concentration camp at Auschwitz-Birkenau - an event marked annually by Holocaust Memorial Day.

In order to perpetrate the mass killings and other crimes of the Holocaust, the Nazi regime needed to coordinate and communicate about its activities. This included wireless communications which were intercepted and decoded at Bletchley Park.

In this episode we take a look at what the Government Code and Cypher School (Bletchley Park) knew about these Nazi crimes, how and when this information was obtained, and how western governments responded to the news.

Bletchley Park’s Research Historian Dr David Kenyon is joined by journalist, author and Holocaust historian Christian Jennings to discuss his work on the role of codebreaking in these terrible events.

Image: ©Bletchley Park Trust 2025

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