Document Title Government Code and Cypher School: Signals Intelligence Passed to the Prime Minister, Messages and Correspondence
Reference HW 1/3312
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 Belgium, Bulgaria, Burma, China, England, Finland, France, Germany, Great Britain, Greece, Holland, Hungary, India, Italy, Japan, Latvia, Malta, Netherlands, Norway, Philippines, Romania, Russia, Sicily, Singapore, Soviet Union, Spain, Turkey, United States of America, Yugoslavia
Document Type Signals Intelligence
Organisations Government Code and Cypher School, Security Service
People Franklin Delano Roosevelt


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: of German Air Force (GAF) fighter units concentrating close to the West front; the 57th Army Corps report that the 346th Infantry Division evacuated the bridgehead at Willemstad, and crossed to the north bank of the Hollandsche Diep; and that the 245th Infantry Division destroyed road and rail bridges over to Moerdijk after crossing, leaving a weak rearguard in the Moerdijk bridgehead; on Germany: of all Sea Transport officers being sent to Germany for a special operation of vital importance, on November 5; on South and South-eastern Europe: of the Admiral for the Adriatic anticipating a large-scale Allied landing in the North Adriatic, on November 6; and that the GAF station at Skopje was closed and destroyed on November 7-8, with its Battle HQ transferring to Sarajevo; Naval Headlines, covering a request from the Admiral Commanding the Eastern Baltic for three months' stores at Sworbe; that a flotilla of one-man U-boats transferred from Norderney to Norden on stand-by for an operation in the western area; that a further flotilla transferred from Groningen to Rotterdam with a flotilla of explosive motor-boats; U-boats being ordered to intercept and attack Soviet shipping in the area of the Gorlo Strait and Belushya; an Allied air raid on fuel and storage dumps and repair facilities in Singapore, and that Japanese fighter reinforcement was requested; and that a Japanese military supply convoy is to leave Singapore for Car Nicobar; from the Japanese minister in Stockholm, an agent's report on the Moscow Conference, from October 29; from the Japanese ambassador in Moscow, a complaint about a lack of information on the progress in the Philippines, on October 31; Naval Headlines of November 4, covering an order from the Admiral for the Polar Coast for all troops not required for coastal defence to move off via the area south of Tromsoe; the failure of the minefields in Scheldt being attributed to faulty mines, which was queried by the Prime Minister (PM), with a response by the First Sea Lord (ISL); and the Panther Group of U-boats' dispositions from north of the Norwegian coast to north of the Kola Inlet; and from the Japanese naval attach� in Berlin, a comprehensive appraisal of the war situation, as at October 30.


military dispositions, German air force, Western Front, aircraft, rockets, military situation reports, demolitions, transportation, German navy, predicting enemy intentions, amphibious operations, Italian Campaign, aerial attacks, occupied Yugoslavia, naval intelligence, German U-boats, Pacific War, air raids, military supplies, Japanese-occupied territory, United States Army Air Force, Japanese navy, warships, diplomatic intelligence, conferences, Allied powers, Allied strategy, post-war planning, Polish government, information sharing, invasion of the Philippines, mines, minesweeping, occupied Belgium, shipping losses, assessing enemy strength, German war effort, Eastern Front

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