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In 1938, thanks to years of work by a remarkable female agent, MI5 ensured a package of British defence plans stayed secret.
Piece
Decrypts of medium/low grade German naval cypher messages
Catalogue reference: HW 18/68
What’s it about?
This record is about the Decrypts of medium/low grade German naval cypher messages dating from 1942 Jul 10-1942 Aug 20 in the series Government Code and Cypher School: Naval Section: Reports of German, Italian, French,.... 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 18/68
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Date (When the record was created)
- 1942 Jul 10-1942 Aug 20
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Description (What the record is about)
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Decrypts of medium/low grade German naval cypher messages
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Note (Additional information about the record)
- see also DEFE 3/945-946
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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)
- STPG 4000-4999
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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)
- Open Immediately
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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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- Topics
- Intelligence
- Navy
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Record URL
- https://beta.nationalarchives.gov.uk/catalogue/id/C6018997/
Series information
HW 18
Government Code and Cypher School: Naval Section: Reports of German, Italian, French,...
See the series level description for more information about this record.
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)
488 records
Within the series: HW 18
Government Code and Cypher School: Naval Section: Reports of German, Italian, French,...
You are currently looking at the piece: HW 18/68
Decrypts of medium/low grade German naval cypher messages
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