Document Title Government Code and Cypher School: Signals Intelligence Passed to the Prime Minister, Messages and Correspondence
Reference HW 1/2213
Conflicts Second World War
Themes Military Intelligence and Operations
Regions Atlantic, Europe, Mediterranean
Countries Germany
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: on measures laid down for ensuring that all serviceable fighter and heavy fighter aircraft at front transit stations in Germany are employed to fight off major Allied raids by day, on November 1; and Naval Headlines.


tactics, German air force, anti-aircraft defence, Home Front, naval intelligence, German navy, warships, demolitions, naval bases, German withdrawal, German U-boats

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