Document Title Government Code and Cypher School: Signals Intelligence Passed to the Prime Minister, Messages and Correspondence
Reference HW 1/567
Conflicts Second World War
Themes Military Intelligence and Operations
Regions Europe, Mediterranean
Countries Cyprus, Holland, Italy, 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 includes the following reports: that all available German forces are being prepared to meet the Soviet advance in the Kharkov area, on May 12; and Naval Headlines.


military operations, Red Army, naval intelligence, German U-boats, torpedo boats, Italian navy, shipping, oil

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