Document Title Government Code and Cypher School: Signals Intelligence Passed to the Prime Minister, Messages and Correspondence
Reference HW 1/382
Conflicts Second World War
Themes Military Intelligence and Operations
Regions Atlantic, East Asia, Europe, Mediterranean, Middle East, South Asia
Countries England, Germany, Holland, India, Italy, Japan, Malta, Netherlands, Norway, Russia, Sicily, Singapore, Sweden, Turkey
Document Type Signals Intelligence
Organisations Government Code and Cypher School, Security Service
People Edward Bridges, Adolf Hitler, Joachim von Ribbentrop


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 reply of the First Sea Lord (1SL) to the Prime Minister (PM) on a report of damage to German battle cruisers being given to the President on February 22; and the PM's instruction to the 1SL about the same. This file also includes the following Naval Headlines report: part of a report for February 20 dealing with damage to battle cruisers discussed above, and a report on German and Italian activity; a report from the Turkish minister in Stockholm on reasons for the move of German naval ships to Norway, from February 19; and a report from the Turkish ambassador in Berlin on Ribbentrop's views on the war situation, from February 19.


naval intelligence, warships, German navy, mines, information sharing, German U-boats, Italian navy, submarines, torpedo boats, troop movements, predicting enemy intentions, diplomatic officials, Swedish neutrality, military operations, military situation reports, naval warfare

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