Document Title Government Code and Cypher School: Signals Intelligence Passed to the Prime Minister, Messages and Correspondence
Reference HW 1/3787
Conflicts Second World War
Themes Military Intelligence and Operations, Foreign Policy and International Relations
Regions Africa, East Asia, Europe, Latin America, Mediterranean, Middle East, North America, Pacific, South Asia
Countries Afghanistan, Azerbaijan, Belgium, Brazil, Bulgaria, Burma, China, Czechoslovakia, England, Formosa, France, Germany, Great Britain, Greece, India, Indochina, Iran, Japan, Malaya, Nigeria, Norway, Palestine, Persia, Philippines, Poland, Portugal, Russia, Singapore, Soviet Union, Syria, Thailand, Turkey, Ukraine, United States of America
Document Type Signals Intelligence
Organisations Foreign Office, Geheime Staatspolizei, Security Service, United Nations, Government Code and Cypher School
People Edward Bridges, Franklin Delano Roosevelt, 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: intelligence reports submitted by C (the head of MI6) to the Prime Minister; part of a daily supply of intelligence to the PM, mainly consisting of diplomatic decrypts (BJs, for the full series see HW 12) and Naval Headlines.


Pacific War, predicting enemy intentions, Allied strategy, shipping losses, Japanese navy, naval intelligence, diplomatic intelligence, Soviet-Turkish relations, Soviet foreign policy, Polish government, guerrilla warfare, Japanese-occupied territory, Soviet-Japanese relations, Red Army, troop movements, demobilisation, political intelligence, Soviet government, Anglo-Egyptian relations, royalty, conferences, Allied powers, post-war planning, Anglo-Spanish relations, naval operations, Japanese withdrawal, evacuation, naval bombardment, landing places, amphibious operations, minesweeping, military situation reports, convoys, Indian independence, espionage, subversion, Soviet intelligence services, Zionism, Jews, Soviet satellite states, military organisation, aerial attacks, aircraft, casualties, aircraft carriers

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