Document Title Government Code and Cypher School: Signals Intelligence Passed to the Prime Minister, Messages and Correspondence
Reference HW 1/3007
Conflicts Second World War
Themes Military Intelligence and Operations, Weapons Technology and Nuclear Warfare
Regions Atlantic, East Asia, Europe, Mediterranean, North America, Pacific
Countries Italy, Norway, Russia, Switzerland, United Kingdom, United States of America
Document Type Signals Intelligence
Organisations Foreign Office, Security Service, Government Code and Cypher School
People Edward Bridges, Adolf Hitler


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 contains a message from C to the Prime Minister (PM); and the following reports on Italy: on the Battle HQs of the 19th German Air Force (GAF) Division, the 76th Panzer Corps and the 14th Corps and Divisional boundaries, on June 25; and the 1st Parachute Division reports that roads were bombed in the Lake Trasimene area; Naval Headlines, covering Cherbourg wireless station having gone off the air, on June 25; the evacuation of concentration camp prisoners from Alderney to Guernsey; that U-boats are to attack Allied shipping in the Channel between Portsmouth and Seine Bay; that heavy diesel oil issues in the Aegean are to be cut by one third; that a German pirate operation is to be begun in the Northern Sporades; that Japanese naval attach?abroad have been informed of a battle between the Japanese Combined Fleet and an Allied force west of the Marianas, on June 19; that the Japanese Southern Area Army, assessing Allied intentions, anticipate the Allies are planning a large-scale offensive linking the Indian and Pacific Oceans, probably after the rainy season but noting the possibility of small-scale landing operations on the Andaman and Nicobar Islands even during the rainy season; and that two tons of gold bullion is aboard the Japanese submarine I-52 on passage from the Far East to Europe; from the German naval attach?n Lisbon, a pessimistic message, with visits by the PM and His Majesty the King to the Normandy bridgehead taken as proof of Allied confidence, on June 26; from the Chinese charg?n Berne, on the use of the flying bomb acting as a morale boost to the Germans, and that Kesselring is seeking to prove his Swiss ancestry, on June 22; from the Japanese ambassador in Berlin, describing Allied air raids on Berlin, on June 22; and from the Japanese consul-general in Hamburg, detailing Allied air raids on June 18 and 20.


military situation reports, Italian Campaign, German withdrawal, effects of bombing, roads, naval intelligence, German navy, warships, naval bases, Battle of Normandy, Operation Overlord, evacuation, German U-boats, shipping losses, Pacific War, Battle of the Philippine Sea, Japanese navy, United States Navy, informants, German government, defeatism, secret weapons, air raids

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