Document Title Government Code and Cypher School: Signals Intelligence Passed to the Prime Minister, Messages and Correspondence
Reference HW 1/3677
Conflicts Second World War
Themes Military Intelligence and Operations, Foreign Policy and International Relations
Regions Atlantic, East Asia, Europe, Mediterranean, South Asia
Countries China, India, Indochina, Japan
Document Type Signals Intelligence
Organisations Government Code and Cypher School, Security Service
People Edward Bridges


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 Western Europe: that the 5th Panzer Army makes plans early on April 5 to attack the Allied bridgehead over the Sieg south-west of Siegen at dawn on the following day, and calls for German Air Force (GAF) air support; on the GAF 15th Air Division's combat plans for April 6; that reconnaissance results for April 5 show strong German forces are concentrating in the area north-west of Muehlhausen, and are preparing to thrust west towards Eisenach on April 6/7; and the GAF 15th Air Division reports a planned attack by the 11th Army in the Kassel area was abandoned, with the Army going over to river defence, on April 5; Naval Headlines; and from the Japanese ambassador in Nanking, an incomplete message from Tokyo on March 24, possibly suggesting an impending armistice between the Chungking government and Japan.


Western Front, German army, operations planning, counter-attacks, Crossing of the Rhine, military dispositions, naval intelligence, coastal defence, shipping losses, German withdrawal, Pacific War, captured equipment, shipping, French government, military situation reports, liberation of Burma, peace proposals, armistice

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