Document Title Government Code and Cypher School: Signals Intelligence Passed to the Prime Minister, Messages and Correspondence
Reference HW 1/459
Conflicts Second World War
Themes Military Intelligence and Operations
Regions Europe
Countries Greece
Document Type Signals Intelligence
Organisations Government Code and Cypher School
People Not Defined


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 reports: Naval Headlines, on German and Italian activity; and a summary of German police messages of March 27 (not included).


naval intelligence, German U-boats, naval warfare, Royal Navy, German navy, convoys, Battle of the Atlantic, Italian navy, troop movements

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