Document Title Government Code and Cypher School: Signals Intelligence Passed to the Prime Minister, Messages and Correspondence
Reference HW 1/618
Conflicts Second World War
Themes Military Intelligence and Operations, Foreign Policy and International Relations
Regions Africa, Atlantic, Europe, Latin America, Mediterranean, North America, South Asia
Countries Argentina, Brazil, Chile, Corsica, France, French West Africa, Germany, Great Britain, Greece, Iceland, India, Italy, Russia, United States of America
Document Type Signals Intelligence
Organisations Government Code and Cypher School, Security Service
People Edward Bridges


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 messages: from the Vichy French military attach� in Chungking, on Chinese estimates of plans for the Japanese offensive, on May 26; from the Italian air attach� in Bucharest, on German intelligence reports on May 29; from the Italian ambassador in Changhai on the war in China, on May 30; from the Portuguese ambassador in Rio de Janeiro on Brazilian attacks on Axis submarines, on May 30; and that Brazil will enter the war, on May 30; from the Portuguese charg� in Berlin on German views on the war, on May 31; on the decline of Franco-Italian relations, as of May 31; from the Turkish minister in Madrid on Italian designs on French territory, on May 30; from the Japanese minister in Madrid on defence measures at Dakar, on May 30; and the Chief of the Air Staff's (CAS's) reply on 1027/T17 - see 9743.


diplomatic intelligence, Japanese strategy, military situation reports, Eastern Front, Arctic convoys, Sino-Japanese War, Brazilian armed forces, second front, Vichy regime, colonial troops

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