Document Title Government Code and Cypher School: Signals Intelligence Passed to the Prime Minister, Messages and Correspondence
Reference HW 1/544
Conflicts Second World War
Themes Military Intelligence and Operations
Regions Mediterranean
Countries Balearic Islands
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: Naval Headlines, covering German naval action against convoy PQ11 in which HMS Edinburgh and the German destroyer Hermann Schoemann were sunk; U-boat action against convoy QP15; Italian convoys in the Mediterranean; and that the German ship Otto Leonhardt was torpedoed off Cape Dukato.


naval intelligence, naval warfare, warships, German navy, German U-boats, Arctic convoys, shipping losses, Italian navy, shipping, Spanish armed forces

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