Document Title Government Code and Cypher School: Signals Intelligence Passed to the Prime Minister, Messages and Correspondence
Reference HW 1/3453
Conflicts Second World War
Themes Military Intelligence and Operations, Foreign Policy and International Relations
Regions Atlantic, East Asia, Europe, Mediterranean, Middle East
Countries China, England, Formosa, Germany, Indochina, Japan, Persia
Document Type Signals Intelligence
Organisations Government Code and Cypher School, Security Service
People Edward Bridges, Adolf Hitler, Joachim von Ribbentrop, 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: Naval Headlines; from the Bulgarian minister in Berne, on Allied relations and the German offensive, on January 12; and from the Persian consulate-general in New York, that the three-power meeting is probably to be in Tehran, on January 10.


naval intelligence, naval operations, torpedo boats, German navy, military organisation, coastal defence, German U-boats, tactics, evacuation, naval bases, occupied Norway, Pacific War, shipping losses, aerial attacks on ships, United States Navy, aircraft crash, casualties, military commanders, diplomatic intelligence, German foreign policy, peace proposals, Nazi leadership, Allied powers, conferences

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