Document Title Government Code and Cypher School: Signals Intelligence Passed to the Prime Minister, Messages and Correspondence
Reference HW 1/170
Conflicts Second World War
Themes Military Intelligence and Operations
Regions Africa, Atlantic, Europe, Mediterranean
Countries Gibraltar, Guinea
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 the Mediterranean: the German Air Force (GAF) claim to have set a cruiser on fire; on the Moscow Front: a situation report of October 25; and the Naval Headlines, covering German, Italian and Spanish (Russian Front) activity.


aerial attacks on ships, German air force, Royal Navy, military situation reports, Operation Barbarossa, German army, Red Army, encirclement, naval intelligence, German navy, German U-boats, Italian navy, invasion of the Soviet Union

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