Focus on
Olga Gray and the Woolwich Arsenal Spy Ring
In 1938, thanks to years of work by a remarkable female agent, MI5 ensured a package of British defence plans stayed secret.
Piece
Reports revealing enemy exploitation of US Army Air Force medium grade cyphers on...
Catalogue reference: HW 40/116
What’s it about?
This record is about the Reports revealing enemy exploitation of US Army Air Force medium grade cyphers on... dating from 1944 Jun 25 - 1944 Nov 26 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
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Reference (The unique identifier to the record described, used to order and refer to it)
- HW 40/116
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Date (When the record was created)
- 1944 Jun 25 - 1944 Nov 26
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Description (What the record is about)
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Reports revealing enemy exploitation of US Army Air Force medium grade cyphers on the Western Front, with some related correspondence
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Held by (Who holds the record)
- The National Archives, Kew
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Former department reference (Former identifier given by the originating creator)
- L8(X)
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Legal status (A note as to whether the record being described is a Public Record or not)
- Public Record(s)
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Access conditions (Information on conditions that restrict or affect access to the record)
- Retained Until 2004
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Closure status (Whether the record is ‘open’ (available to the public) or ‘closed’ (not available due to a legal exemption))
- Open Document, Open Description
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Subjects (Categories and themes found in our collection (our subject list is under development, and some records may have no subjects or fewer than expected))
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Record URL
- https://beta.nationalarchives.gov.uk/catalogue/id/C11217717/
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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Reports revealing enemy exploitation of US Army Air Force medium grade cyphers on...
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