Document Title Government Code and Cypher School: Signals Intelligence Passed to the Prime Minister, Messages and Correspondence
Reference HW 1/2729
Conflicts Second World War
Themes Military Intelligence and Operations, Foreign Policy and International Relations
Regions Africa, Atlantic, East Asia, Europe, Mediterranean
Countries China, Germany, Great Britain, Guinea, Iceland, Indochina, Italy, Japan, Malaya, Norway, Philippines, Russia, Singapore, Thailand, Ukraine
Document Type Signals Intelligence
Organisations Government Code and Cypher School
People Adolf Hitler, Benito Mussolini


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: selected reports from back material not read by the Prime Minister (PM); from the Japanese naval attach� in Berlin, giving a German assessment of the war situation in southern Italy, as at April 11; and on German policy for the conduct of the war since the beginning of 1944, on March 29; on Germany: of the German Air Force (GAF) being ordered to ensure aircraft dispersal and airfield defence after heavy aircraft losses on the ground, on April 6; Naval Headlines 1014 for April 13; 1007 for April 6, covering German false claims of success against a Murmansk convoy; 1001 for March 31; and 1006 and 1013 (which are not included).


information sharing, German-Japanese relations, military strength, Italian Campaign, military situation reports, Battle of Anzio, Operation Shingle, German strategy, predicting enemy intentions, Eastern Front, operations planning, counter-attacks, military organisation, anti-aircraft defence, German air force, naval intelligence, German U-boats, torpedo boats, Japanese navy, warships

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