Document Title Government Code and Cypher School: Signals Intelligence Passed to the Prime Minister, Messages and Correspondence
Reference HW 1/1461
Conflicts Second World War
Themes Military Intelligence and Operations, British Domestic Security
Regions Europe
Countries Belgium, England, France, Holland, Netherlands
Document Type Signals Intelligence
Organisations Government Code and Cypher School
People Not Defined


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 Assistant Chief of Air Staff Intelligence (ACASI), 2266/T20, also see 2576, with the Prime Minister's (PM) comment; a report of the movement of German Air Force (GAF) units to airfields chosen for operations against England, on March 4; and the Chief of the Air Staff (CAS) forwards intelligence comments.


military dispositions, German air force, Hungarian armed forces, operations planning, air raids, airfields

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