Document Title Government Code and Cypher School: Signals Intelligence Passed to the Prime Minister, Messages and Correspondence
Reference HW 1/3150
Conflicts Second World War
Themes Military Intelligence and Operations, Foreign Policy and International Relations, Weapons Technology and Nuclear Warfare
Regions Atlantic, East Asia, Europe, Latin America, Mediterranean, Middle East
Countries Argentina, Brazil, England, Estonia, Finland, Germany, Japan, Norway, Russia, Soviet Union, Switzerland, Turkey
Document Type Signals Intelligence
Organisations Foreign Office, Security Service, Government Code and Cypher School
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 on Western Europe: a 25th Army Corps situation report, for August 5; a situation report from an unspecified corps, for August 5; and that a German Air Force (GAF) anti-shipping unit was warned of a possible landing in the Rhone delta during the night of August 5; from the Chinese chargé in Berne, detailing rumours of Papal mediation for peace, on August 3; from the Persian ambassador in London, on flying bombs, on August 3; from the Brazilian ambassador in London, describing Churchill's speech, on August 3; from the Spanish minister in Helsinki, regarding Finnish-Soviet peace possibilities, on August 2; and Ribbentrop reviews the situation in an exhaustive paper including the aftermath of the attempted assassination of Hitler, on July 25.


troop movements, Allied powers, Battle of Normandy, military objectives, military supplies, military shortages, German air force, aerial attacks on ships, invasion threat, diplomatic intelligence, rumours, peace proposals, air raids, neutrality, politics, German propaganda, assassinations, coup d’état, German army, military commanders, Nazi leadership, security, secret weapons

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