Document Title Government Code and Cypher School: Signals Intelligence Passed to the Prime Minister, Messages and Correspondence
Reference HW 1/14
Conflicts Second World War
Themes Foreign Policy and International Relations, Signals Intelligence and Code-breaking, Military Intelligence and Operations
Regions Europe
Countries Not Defined
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 correspondence: a message on the preservation of secrecy while passing information to Moscow, and a sample message reporting German attempts to envelop the Soviets in the Smolensk sector.


information sharing, secrecy, Anglo-Soviet relations, Operation Barbarossa, invasion of the Soviet Union

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