Document Title Government Code and Cypher School: Signals Intelligence Passed to the Prime Minister, Messages and Correspondence
Reference HW 1/1449
Conflicts Second World War
Themes Military Intelligence and Operations
Regions Africa, Atlantic, East Asia, Europe, Mediterranean
Countries France, Germany, Great Britain, Greece, Iceland, Italy, Russia, Sardinia, Sicily, Tunisia
Document Type Signals Intelligence
Organisations Government Code and Cypher School, Security Service
People Edward Bridges, Adolf Hitler, Benito Mussolini, Joachim von Ribbentrop


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: of the German Air Force (GAF) at Sardinia's excuses for failing to attack the fast convoy, on March 10; Naval Headlines; and from the Japanese acting ambassador in Rome, detailing Ribbentrop's talks with Mussolini on the future conduct of the war in the Mediterranean area (2 versions), on March 6.


military commanders, German air force, incompetence, aerial attacks on ships, naval intelligence, German U-boats, mechanical problems, Italian navy, shipping, diplomatic intelligence, Axis powers, information sharing, communications

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