Document Title Government Code and Cypher School: Signals Intelligence Passed to the Prime Minister, Messages and Correspondence
Reference HW 1/1900
Conflicts Second World War
Themes Military Intelligence and Operations, Foreign Policy and International Relations
Regions Atlantic, East Asia, Europe, Mediterranean, Middle East, North America, Pacific, South Asia
Countries Bulgaria, China, Croatia, Denmark, England, France, Germany, Gibraltar, Great Britain, Greece, Hungary, India, Italy, Japan, Malta, Romania, Russia, Sardinia, Sicily, Turkey, United States of America
Document Type Signals Intelligence
Organisations Government Code and Cypher School, Security Service
People Edward Bridges, Dwight Eisenhower, Adolf Hitler, Benito Mussolini, Joachim von Ribbentrop


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: a German naval general report for July 29, on a North Sea convoy being engaged by Allied motor torpedo boats, that two Allied convoys left Gibraltar into the Atlantic, a summary of activity round and about Sicily, on Allied submarines being located south of Toulon, on the Chateau Yquem being confirmed as sunk, on an unsuccessful Allied submarine attack on the Re Alessandro convoy, and on Allied submarines being located off Feodosia, and south west of Adler, and east north east of the Bosphorus; on Southern Europe: that three explosive motor boats are to patrol the Augusta Catania area on July 30-31; and Naval Headlines, covering the Tirpitz exercising in Altenfjord, on July 29-31. This file also includes the following correspondence: from the Portuguese minister in Ankara, that the Italian Foreign Ministry is pressing for the restoration of the Spanish Monarchy on July 28; from the Greek ambassador in Ankara, on the Turkish response to the fall of Mussolini and views of the effect on the war situation, on July 27; from the Japanese ambassador in Rome, on the campaign in Sicily, on July 25; the Japanese Foreign Minister's Note to the ambassador in Berlin on closer cooperation between Germany and Japan, on July 2; from the Brazilian minister in Ankara, noting Turkish reactions to the Italian crisis, and that he anticipates an early capitulation, and expects Bulgaria and Romania to follow, on July 27; from the Japanese ambassador in Istanbul, describing a meeting with the new Italian Foreign Minister, Guariglia, and the prospects for Italy's continued involvement in the war, on July 30; from the Bulgarian minister in Madrid, on the Italian situation, as at July 30; from the Japanese ambassador in Rome, on a meeting with Mussolini, on July 25; from the Japanese ambassador in Berne, on the Italian situation in light of Mussolini's resignation, on July 26; from the Japanese ambassador in Berlin, detailing a discussion with the Italian Embassy Counsellor on the Italian crisis, on July 26; from the Japanese representative to the Vatican, on the new Italian government's policy towards maintaining the war, on July 27; from the Japanese minister in Berne, on discussions with his German and Italian colleagues on the Italian situation, on July 27; a Japanese-language wireless telephone conversation between Berlin and Tokyo on the Italian situation, on July 28; from the Japanese ambassador in Berlin, a comprehensive report of a discussion with Steengracht, standing in at the German Foreign Ministry during Ribbentrop's illness, on the Italian crisis, on July 27; and SHARK: for July 18.


Axis powers, shipping losses, military supplies, patrols, Italian navy, naval intelligence, military exercises, warships, German navy, torpedo boats, German U-boats, Battle of the Atlantic, supply problems, fuel, Spanish politics, royalty, fascist leadership, collapse of Fascist Italy, diplomatic intelligence, military situation reports, invasion of Sicily, Operation Husky, airfields, air raids, German-Japanese relations, Italian government, defeatism, public opinion, Italian war effort, German-Italian relations, politics, surrender, peace proposals, Axis strategy, Allied strategy, predicting enemy reactions, contingency planning

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