Government Code and Cypher School: Signals Intelligence Passed to the Prime Minister, Messages and Correspondence

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 general naval situation report for July 30; a damage report for air raids on Kiel and Warnemuende; of German battle forces exercising in Alta Fjord; Naval Headlines, covering the Tirpitz exercising in Altenfjord; and a submarine supply vessel being sunk in the Azores area, on July 13, so that U-boats are having to share fuel. This file also includes the following correspondence: from the Japanese ambassador in Istanbul, on rumoured Allied concern over a possible understanding between the Soviet Union and Germany, on July 27; from the Japanese minister in Lisbon, forwarding a Portuguese source's information on the background to Mussolini's resignation, on July 27; the Japanese Foreign Ministry's message to Badoglio and the new Italian government, on July 28; from the Japanese minister in Istanbul, giving the views of a senior German military officer on the Italian situation, noting the expectation of a peace agreement between Italy and the Allies within two or three weeks, on July 28; from the Brazilian minister in Berne, on rumours of Badoglio's contacts with U.K. and U.S. officials at the Vatican to discuss armistice conditions, on July 28; from the Irish minister in Berlin, on newspaper reports about the Italian crisis, on July 29; from the Portuguese minister in Rome, on the Italian situation, on July 25; a German propaganda directive to all stations relating to the Italian situation, on July 28; from the Irish minister in Rome, describing events in the city immediately following Mussolini's resignation, the proclamation of Martial Law and the temporary suspension of telegraph and telephone services, on July 29; and from the Italian ambassador in Tokyo, detailing an interview with the Japanese Foreign Minister on July 28.