Document Title Government Code and Cypher School: Signals Intelligence Passed to the Prime Minister, Messages and Correspondence
Reference HW 1/1803
Conflicts Second World War
Themes Military Intelligence and Operations
Regions Africa, Atlantic, Europe, Mediterranean
Countries Bahamas, Gibraltar, Liberia, Sardinia, Sicily, Trinidad
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 on South Europe: of Axis blocking and demolition in Sicilian ports, on July 3, 5 and 7; that German Air Force (GAF) fighters are to protect Olbia, on July 7; that the GAF are to transport a Fortress Battalion to Sardinia on July 7-8; of damage to an airfield caused by a raid on Sardinia, on July 6; on raid damage to San Pietro airfield, on July 6; and Naval Headlines.


demolitions, ports, contingency planning, invasion of Sicily, German air force, anti-aircraft defence, German army, military dispositions, troop movements, effects of bombing, air raids, naval intelligence, Battle of the Atlantic, German U-boats, Italian navy, shipping losses

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