Document Title Government Code and Cypher School: Signals Intelligence Passed to the Prime Minister, Messages and Correspondence
Reference HW 1/1891
Conflicts Second World War
Themes Military Intelligence and Operations, Foreign Policy and International Relations
Regions Atlantic, East Asia, Europe, Mediterranean, Pacific
Countries Corsica, Crete, France, Germany, Italy, Japan, Russia, Sicily
Document Type Signals Intelligence
Organisations Government Code and Cypher School, Security Service
People Edward Bridges, Hermann Göring, 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 on Germany: a report of Allied air raids over Germany on July 25-26, describing damage being caused to Blohm and Voss in Hamburg, the Fokker works in Amsterdam, Krupp in Essen, and noting the use of metal leaves to confuse Radio Direction Finding; on Southern Europe: that the German Sea Transport Authorities in Leghorn were ordered to suspend the loading of all large ships, on July 26; Naval Headlines, covering the beach between Taormina and Fiumefreddo being mined by the Germans; that the Italians are to lay mines with temporary moorings at Taranto along the coast of Calabria; and that a convoy carrying 1,000 troops for Rhodes is expected to leave Piraeus on July 27; from the Japanese ambassador in Berlin, on the Italian change of government; on Badoglio's expressed determination to continue the war; and that Mussolini is under army protection in a Rome suburb, on July 28; and from the Japanese ambassador in Rome, detailing an interview with Mussolini and the latter's assertion of the necessity for the cessation of the war between Germany and the Soviet Union and views on the possible progress of the war through Italy, on July 25.


air raids, radar, radar counter-measures, Royal Air Force, technology, ports, shipping, transportation, naval intelligence, aerial reconnaissance, Battle of the Atlantic, contingency planning, Italian government, armistice, mines, landing places, aerial attacks on ships, landing craft, convoys, rewards, diplomatic intelligence, collapse of Fascist Italy, politicians, surrender, Axis strategy, invasion of Italy, defence

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