Document Title Government Code and Cypher School: Signals Intelligence Passed to the Prime Minister, Messages and Correspondence
Reference HW 1/303
Conflicts Second World War
Themes Military Intelligence and Operations, Foreign Policy and International Relations, Intelligence Organisation and Administration
Regions Africa, East Asia, Europe, Latin America, Mediterranean, Middle East, North America, Pacific, South Asia
Countries Australia, Bolivia, Brazil, Bulgaria, Burma, Canada, Chile, China, Colombia, Dutch East Indies, Ecuador, England, France, Germany, Great Britain, India, Indochina, Italy, Japan, Malaya, Mexico, Panama, Paraguay, Peru, Russia, Singapore, South Africa, Thailand, Togo, Turkey, Ukraine, United States of America, Uruguay, Venezuela
Document Type Signals Intelligence
Organisations Foreign Office, Security Service, Government Code and Cypher School
People Edward Bridges, Hermann Göring, Adolf Hitler


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. The file includes messages from the Chinese charg� in Vichy to London on Japanese demands to the French on Indo-China from December 4; from the Italian ambassador in Tokyo on Japanese-U.S. talks from November 30; from the Japanese ambassador in Bangkok on Japanese policy towards Thailand from November 25 and a rebuff from Tokyo on November 27; from the ambassador in Bangkok asking for planning experts to be sent to Thailand on December 3; from the Mexican minister in Berlin on a talk by the Minister of Propaganda on the situation, especially against the U.S.S.R., on December 2; from the Turkish ambassador in Vichy on Franco-German negotiations from December 2; from the Turkish ambassador in Tokyo, who is not optimistic about Japanese-U.S. talks; and reports that the Japanese army expect operations between December 1 and December 20. This file also includes messages from the Turkish ambassador in Berlin, with a fragmentary report on Franco-German talks from December 3; from the Turkish consul on the battle for Moscow on December 3; and from the Turkish consul in Batumi on the local situation, passed from Kuibyshev on December 3. This file also contains a number of intelligence items on Japan: a note from Tokyo sending codewords for use in clear telegrams to London and other posts from November 27; a note from Tokyo to London on the destruction of ciphers and files on December 2 and confirmation by London on December 3; and a note on further emergency codewords to London and other posts from November 29. This file also includes messages from the Italian ambassador at Ankara on a conversation with Sarajoglu mainly on relations with the U.S.S.R. and the military situation there on December 3; from the Japanese ambassador to Thailand on a conversation with Pibul on relations with Japan and neutrality on November 28; from the Japanese ambassador in Bangkok to the Consul in Singapore with instructions for subversive activity in Malaya from November 30; and more emergency codewords to overseas posts from Tokyo from November 29.


Japanese army, diplomatic intelligence, threat of war with Japan, American foreign policy, military operations, diplomatic officials, diplomacy, economy, currencies, Japanese foreign policy, invasion of the Soviet Union, Nazi leadership, American neutrality, military situation reports, German army, Red Army, press reports, newspapers, tanks, Turkish neutrality, mobilisation, propaganda, defence, strategy, cyphers, code words, communications, Italian army, military supplies, deserters, anti-British feeling, colonies, empire, telegraph communications

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