Cyphers. British: Possible Possession by Germans. Extract from a Letter from the Director of Intelligence, Air Ministry to the Chairman, Joint Intelligence Sub-Cttee.

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Cyphers. British: Possible Possession by Germans. Extract from a Letter from the Director of Intelligence, Air Ministry to the Chairman, Joint Intelligence Sub-Cttee.

1 May 1940

THIS DOCUMENT IS THE PROPERTY OF HIS BRITANNIC MAJESTY'S GOVERNMENT TO BE KEPT UNDER LOCK AND KEY. It is requested that special care may be taken to ensure the secrecy of this document. S E C R E T. J.I.C.(40)113. 11TH JUNE. 1940. COPY NO. 14 WAR CABINET. JOINT INTELLIGENCE SUB-COMMITTEE. Extract from a letter from the Director of Intelligence. Air Ministry to the Chairman. Joint Intelligence Sub-Committee. I feel the time has come when we should have a thorough enquiry into the possibility of the Germans having become possessed of one or more of our cyphers.
second world war signals intelligence joint intelligence sub-committee chiefs of staff communications interception code-breaking cyphers inter-services security board c edwards
Collection ID
CAB81
Conflict
Second World War
Document Reference
CAB 81/97/45
Document Types
Correspondence
File Reference
CAB 81/97
Identifier
10.1080/swwf.cab81.0097.045
Keywords
Cyphers Communications Interception
Languages
English
Organizations
Chiefs of Staff Joint Intelligence Sub-Committee Inter-Services Security Board
Pages
2
Persons Discussed
C Edwards
Published in
United Kingdom
Series
War Cabinet. Joint Intelligence Sub-Committee. Memoranda. May - July 1940. Papers Numbers. JIC 71-194. Volume VII
Themes
Signals Intelligence Code-breaking