Document Title Government Code and Cypher School: Signals Intelligence Passed to the Prime Minister, Messages and Correspondence
Reference HW 1/3536
Conflicts Second World War
Themes Military Intelligence and Operations, Foreign Policy and International Relations
Regions Atlantic, East Asia, Europe, Mediterranean, North America, South Asia
Countries China, England, France, India, Indochina, Japan, Philippines, Poland, Portugal, Russia, Switzerland, United States of America
Document Type Signals Intelligence
Organisations Government Code and Cypher School, Security Service
People Edward Bridges, Desmond Morton, Franklin Delano Roosevelt, Josef Stalin


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: a Japanese communiqué on Philippines operations to Berlin and Moscow, on February 19; of the French Governor General of Indo-China, Decoux, changing allegiance from Petain to De Gaulle, and on Franco-Japanese relations in Indo-China, on February 17; of the Japanese minister in Lisbon being informed of the impossibility of withdrawing Japanese troops from Timor; from the French Delegate in Lublin, on the situation in Poland, as of February 22; from the Spanish ambassador in Washington, on the Crimea Conference, and a discussion with a Polish representative, on February 14; Naval Headlines, covering the Rasmus Group of U-boats being directed along the course of Convoy RA 64 and being attacked by aircraft; that the German heavy cruiser Admiral Scheer supported troops in an offensive on the Samland front; and that Kesselring is to inspect the Small Battle Units base at Pola, on February 18.


Pacific War, military situation reports, invasion of the Philippines, air raids, effects of bombing, French government, colonies, collaborators, Sino-Japanese War, Portuguese foreign policy, Polish government, Allied powers, naval intelligence, German U-boats, Battle of the Atlantic, convoys, submarines, United States Navy, aircraft carriers

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