Document Title Government Code and Cypher School: Signals Intelligence Passed to the Prime Minister, Messages and Correspondence
Reference HW 1/2780
Conflicts Second World War
Themes Military Intelligence and Operations
Regions Africa, Atlantic, East Asia, Europe, Mediterranean
Countries France, Guinea, Singapore
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 Southern Europe: that the 94th Division urgently requires reconnaissance and an operation by ground attack aircraft, on May 12; of fighting in the 51st Corps' area on May 12; heavy air attacks on supply roads were reported by the 94th Division on May 12; that Porto Ferraio on Elba was devastated by Allied raids on May 12; that increased readiness at Pola and Leghorn was in force on May 12; and Naval Headlines.


German army, Battle of Monte Cassino, inter-services cooperation, German air force, aerial reconnaissance, aerial attacks, strafing, artillery, roads, Allied powers, military situation reports, breakthroughs, effects of bombing, air raids, invasion threat, landing places, naval intelligence, German navy, military exercises, occupied France, warships, German U-boats, Pacific War, Japanese navy, shipping losses, aerial attacks on ships

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