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Enemy exploitation of codes and cyphers of various UK Government Departments: miscellaneous...

Catalogue reference: HW 40/77

What’s it about?

This record is about the Enemy exploitation of codes and cyphers of various UK Government Departments: miscellaneous... dating from 1943 Oct 27 - 1945 Feb 15 in the series Government Code and Cypher School: Security of Allied Cyphers Section: Security Files.... It is held at The National Archives, Kew.

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Full description and record details

Reference
HW 40/77
Date
1943 Oct 27 - 1945 Feb 15
Description

Enemy exploitation of codes and cyphers of various UK Government Departments: miscellaneous reports and correspondence

Held by
The National Archives, Kew
Former department reference
L5(D)
Legal status
Public Record(s)
Access conditions
Retained Until 2004
Closure status
Open Document, Open Description
Subjects
Topics
Conflict
Intelligence
Operations, battles and campaigns
Record URL
https://beta.nationalarchives.gov.uk/catalogue/id/C11217939/

Series information

HW 40

Government Code and Cypher School: Security of Allied Cyphers Section: Security Files...

See the series level description for more information about this record.

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Catalogue hierarchy

Over 27 million records

This record is held at The National Archives, Kew

17,110 records

Within the department: HW

Records created or inherited by Government Communications Headquarters (GCHQ)

278 records

Within the series: HW 40

Government Code and Cypher School: Security of Allied Cyphers Section: Security Files...

You are currently looking at the piece: HW 40/77

Enemy exploitation of codes and cyphers of various UK Government Departments: miscellaneous...

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