Document Title Government Code and Cypher School: Signals Intelligence Passed to the Prime Minister, Messages and Correspondence
Reference HW 1/1781
Conflicts Second World War
Themes Foreign Policy and International Relations
Regions East Asia, Europe
Countries Japan, Siam
Document Type Signals Intelligence, Memoranda
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 report from the Minister of Foreign Affairs in Tokyo: on Japanese-Soviet relations, as of June 23 - the Prime Minister (PM) queries the ambassador's name.


diplomatic intelligence, Soviet-Japanese relations

Cookies Notification

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies. Find out more.