Document Title Government Code and Cypher School: Signals Intelligence Passed to the Prime Minister, Messages and Correspondence
Reference HW 1/28
Conflicts Second World War
Themes Foreign Policy and International Relations, Military Intelligence and Operations
Regions Africa, East Asia, Europe, Mediterranean, Middle East, North America, Pacific, South Asia
Countries Burma, China, Crete, Dutch East Indies, England, Great Britain, India, Iran, Italy, Libya, Malta, Russia, Singapore, Thailand, Turkey, United States of America
Document Type Signals Intelligence
Organisations Foreign Office, Security Service, Government Code and Cypher School
People Edward Bridges, Franklin Delano Roosevelt


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 correspondence: reports of a German-Italian airforce dispute over the use of Italian sea transport in Benghazi; the allocation of trucks to the German Air Force (GAF) by the Italian Army in Tripoli; the grounding of a German fighter squadron in Africa because of engine problems; the Italian ship Bellona being forced to return to Piraeus after British aerial attacks; a request for close escort for the tanker Ussag sailing for Patras; preparations for GAF minelaying in the Mediterranean; the organisation of convoys between Naples and Tripoli; the transfer of a signals section of a German fighter group into newly captured Berislaw on the Dnieper river; the German attempts to destroy a bridge in Dniepropetrovsk; German infantry movements towards Leningrad; a heavy concentration of dive bombers and fighters in the Dniepropetrovsk sector; a thrust by Panzer Group Guderian towards the River Desna; the American denial of the reported presidential approval of British-Soviet action in Iran to counter the German presence there; an instruction to the Chinese ambassador in London to seek Allied help; and a report from the Italian ambassador in Istanbul of the Turkish reaction to Anglo-Soviet demands on Iran, of which he was informed by Fritz von Papen.


Allied strategy, German air force, Italian air force, shipping, transportation, mechanical problems, Desert War, aerial attacks on ships, troop movements, mines, convoys, military situation reports, Operation Barbarossa, wireless communications, bombing, German strategy, Sino-Japanese War, Turkish neutrality, invasion of the Soviet Union

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