0380

Document Title Government Code and Cypher School: Signals Intelligence Passed to the Prime Minister, Messages and Correspondence
Reference HW 1/380
Conflicts Second World War
Themes Intelligence Organisation and Administration
Regions Europe
Countries Norway
Document Type Signals Intelligence
Organisations Government Code and Cypher School
People Not Defined

Description

A file of signals intelligence reports, messages, and correspondence issued by the Government Code and Cypher School and sent by the head ('C') of the Secret Intelligence Service (MI6) to the Prime Minister, Winston Churchill. This file includes the following correspondence: a summary of naval messages and actual messages with translations sent to the First Sea Lord (1SL) under the reference C/8801. The technical explanation to the Prime Minister (PM) from C is not included.

Keywords

German U-boats, German navy, cyphers, intelligence gathering

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