0310

Document Title 'C', Chief of the Secret Intelligence Service (SIS): Secrecy of CX (Intelligence) and Y (Signals Intelligence) Messages
Reference FO 1093/310
Conflicts Second World War
Themes Intelligence Organisation and Administration, Intelligence Gathering and Surveillance
Regions Europe, Latin America, Middle East, South Asia
Countries Bolivia, Bulgaria, Egypt, France, Germany, Great Britain, India, Iraq, Palestine, Russia, Syria, Turkey
Document Type Correspondence, Signals Intelligence
Organisations Foreign Office, Government Code and Cypher School, Ministry of Economic Warfare, Permanent Under-Secretary's Department, Secret Intelligence Service
People Alexander Cadogan, Gladwyn Jebb, Patrick Reilly, Horace Wilson

Keywords

secrecy, informants, intelligence gathering, security, classified documents, military intelligence, communications interception, leakage of information

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