Document Title Government Code and Cypher School: Signals Intelligence Passed to the Prime Minister, Messages and Correspondence
Reference HW 1/489
Conflicts Second World War
Themes Military Intelligence and Operations
Regions Africa, Europe, Mediterranean
Countries Bosnia, Crete, Gibraltar, Italy, Malta, Sicily
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 an Italian operation in east Bosnia has been deferred until April 25; that RAF reconnaissance aircraft were shot down on April 6 in the Crete area; that the 4th Air Fleet are to continue 'strangling' the Kerch Peninsula on April 10; and Naval Headlines, covering U-boat activities in the north Atlantic and Italian convoys in the Mediterranean.


operations planning, Italian army, invasion of Yugoslavia, Royal Air Force, casualties, reconnaissance aircraft, encirclement, Red Army, Eastern Front, naval intelligence, German U-boats, shipping losses, Italian navy, convoys

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