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Bletchley Park and D-Day

Mon, 10 Jun 2019
Overview
Find out more about Bletchley Park's vital contribution to D-Day

Bletchley Park had been compiling vital intelligence for Allied commanders for over 18 months in the run up to D-Day, but the Codebreakers also supported the operation as it unfolded.

Notably, around the date of the invasion (May-July 1944), Bletchley Park took the risk of intercepting enemy messages directly on site in order to speed up the codebreaking process. Secret listeners in Hut 18 (formally Hut 8) were monitoring German Enigma traffic round the clock to monitor the response to the invasion, as well as any threats to the invasion fleet at sea, and the movement of troops in northern France – so that nothing was left to chance. By D-Day, the 7,000 strong workforce at Bletchley Park were decrypting almost 5,000 Enigma messages a day.

The pages below should give a powerful sense of what it was like to be at Bletchley Park during this time, following the progress of the Normandy landings through the reactions of the Germans to the long-anticipated invasion.

Find out more
Articles

Memo, 5 June 1944

Eric Jones, Leader of Hut 3 sends a memo to his team on the eve of D-Day, 5 June 1944.
Articles

Decrypt D-Day

Read the Enigma messages that were intercepted and decrypted at Bletchley Park over D-Day
Articles

Glossary of terms

Used in the handwritten D-Day headlines
Articles

Bletchley Park D-Day Live Twitter Takeover

Follow the D-Day landings in real time on 6 June 2019
Articles

Memo, 5 June 1944

Eric Jones, Leader of Hut 3 sends a memo to his team on the eve of D-Day, 5 June 1944.
Articles

Glossary of terms

Used in the handwritten D-Day headlines
Articles

Decrypt D-Day

Read the Enigma messages that were intercepted and decrypted at Bletchley Park over D-Day
Articles

Bletchley Park D-Day Live Twitter Takeover

Follow the D-Day landings in real time on 6 June 2019
D-Day: Interception, Intelligence, Invasion
D-Day exhibition
11 Apr 2019 — 11 Apr 2029
From 09:30
INCLUDED WITH ADMISSION
Collections Uncovered
Collection Highlights

Collections Uncovered 18

D-Day Decrypts
Collection Highlights

Collections uncovered 16

Invasion Intelligence
Collection Highlights

Collections Uncovered 18

D-Day Decrypts
Collection Highlights

Collections uncovered 16

Invasion Intelligence
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