Document Title Government Code and Cypher School: Signals Intelligence Passed to the Prime Minister, Messages and Correspondence
Reference HW 1/374
Conflicts Second World War
Themes Foreign Policy and International Relations, Military Intelligence and Operations
Regions East Asia, Europe, Middle East, South Asia
Countries Egypt, England, Germany, Great Britain, India, Japan, Russia, Turkey
Document Type Signals Intelligence
Organisations Government Code and Cypher School, Security Service
People Edward Bridges, Adolf Hitler, Joachim von Ribbentrop


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: from the Japanese ambassador in Berlin on a meeting with Ribbentrop on the war situation, from January 15; a report from the Japanese ambassador in Ankara on Turkish suspicions of the U.S.S.R., from January 26; and a report from the Italian ambassador in Ankara on the possibility of Turkey joining the Allies, from January 26. The following items are not included in this file: ZTPI/5263 (658/1; sent to the Director of Military Intelligence (DMI) under C/8618); 100578; 100594; 100597; and a summary of Naval messages No. 208. Items 100531 and 100519 are not listed on the coversheet, but are present. Item C/8613 of January 28 is present, but the 10 listed items are not included.


secret, intelligence distribution, diplomatic officials, communications, Japanese government, military operations, military situation reports, Axis powers, Eastern Front, climate, press reports, political intelligence, invasion threat, invasion preparations, diplomatic intelligence, diplomacy, Soviet foreign policy, Soviet-Turkish relations, Turkish neutrality, Anglo-Soviet relations, diplomatic missions

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