Document Title Government Code and Cypher School: Signals Intelligence Passed to the Prime Minister, Messages and Correspondence
Reference HW 1/3351
Conflicts Second World War
Themes Military Intelligence and Operations, Foreign Policy and International Relations
Regions Atlantic, East Asia, Europe, Mediterranean, North America, South Asia
Countries China, England, Formosa, Germany, India, Italy, Japan, Norway, Philippines, Russia, Soviet Union, United States of America
Document Type Signals Intelligence
Organisations Foreign Office, Security Service, Government Code and Cypher School
People Edward Bridges, Josef Stalin


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 South Europe: that the German Air Force (GAF) in Italy assess the withdrawal of Allied landing craft from the Mediterranean as an indication of landing intentions from England, on November 27; on West Europe: of the identification of Allied air landing areas for the GAF, on November 20; Naval Headlines; from DiploFrance in Paris to the ambassador in London, on Franco-Belgian talks, on November 24; from the Japanese minister in Madrid, on the war situation, and claiming brighter prospects for Germany and Japan, on November 23; from the German ambassador in Tokyo, on Soviet-Japanese relations, as at November 23; and from the Japanese Ministry for Foreign Affairs, describing a naval battle in the Philippines on October 24-25.


predicting enemy intentions, troop movements, landing craft, contingency planning, defence, paratroopers, naval intelligence, German navy, coastal defence, convoys, aerial attacks on ships, German U-boats, Pacific War, Japanese navy, warships, shipping losses, diplomatic intelligence, Japanese strategy, suicide attacks, Soviet foreign policy, Soviet-Japanese relations, naval warfare, invasion of the Philippines, military situation reports

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