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• Catalogue level

  Piece

  Accessions administration: HW 18

  Accessions administration: HW 18

  Held by

  The National Archives, Kew

  Date

  2000 Jan 1 - 2003 Dec 31

  Reference

  PRO 57/15751

• Catalogue level

  Division

  General records of the Government Code and Cypher School

  class="ref" href="HW-d1-c18">HW 18; German plans for sea-born invasion of Britain HW 48; Hut 6 and Hut 8 weekly reports HW 77.

  Held by

  Date

  1914-1979

  Reference

• Catalogue level

  Series

  Government Code and Cypher School: Naval Section: Reports of German, Italian, French,...

  This series consists of records of the Naval Section comprising reports on German, Italian and French naval activity and on German, Italian, French and Spanish naval communications during the Second World War period, based on signals intelligence. Th…

  Held by

  Date

  1938-1945

  Reference

  HW 18

• Catalogue level

  Piece

  Deciphered high grade German naval messages NOTE: see also DEFE 3/531-551

  Deciphered high grade German naval messages NOTE: see also DEFE 3/531-551

  Held by

  The National Archives, Kew

  Date

  1945 Jan 30-1945 Mar 23

  Reference

  HW 18/18

• Catalogue level

  Item

  New York: Unidentified statistics relating to European towns - reported to "VIKTOR"...

  New York: Unidentified statistics relating to European towns - reported to "VIKTOR" by "MAKSIM".

  Held by

  The National Archives, Kew

  Date

  1943 May 21

  Reference

  HW 15/18/18

• Catalogue level

  Piece

  False starts by U-boats from Biscay ports

  False starts by U-boats from Biscay ports

  Held by

  The National Archives, Kew

  Date

  1943 May 01-1943 Aug 31

  Reference

  HW 18/196

• Catalogue level

  Piece

  Portuguese naval messages

  Portuguese naval messages

  Held by

  The National Archives, Kew

  Date

  1943 Nov 20-1944 Jan 17

  Reference

  HW 18/166

• Catalogue level

  Piece

  Communications between German military attacheTokyo and Berlin

  Communications between German military attacheTokyo and Berlin

  Held by

  The National Archives, Kew

  Date

  1944 Mar 07-1945 Apr 10

  Reference

  HW 18/34

• Catalogue level

  Piece

  Decrypts of medium/low grade German naval cypher messages

  Decrypts of medium/low grade German naval cypher messages

  Held by

  The National Archives, Kew

  Date

  1941 Jun 20-1942 Feb 04

  Reference

  HW 18/64

• Catalogue level

  Piece

  Technical intelligence reports 1-25: Series of reports concerned with German naval...

  Technical intelligence reports 1-25: Series of reports concerned with German naval equipment and weapons; Subject in the reports include communication, radar, torpedoes and mines used by the German Navy.

  Held by

  The National Archives, Kew

  Date

  1943 Aug 18-1944 Sep 25

  Reference

  HW 18/165

• Catalogue level

  Piece

  French naval messages

  French naval messages

  Held by

  The National Archives, Kew

  Date

  1940 Oct 12-1940 Oct 22

  Reference

  HW 18/139

• Catalogue level

  Piece

  Naval Section technical papers

  Naval Section technical papers

  Held by

  The National Archives, Kew

  Date

  1943 Oct 15-1945 Jul 26

  Reference

  HW 18/227

• Catalogue level

  Piece

  French naval messages

  French naval messages

  Held by

  The National Archives, Kew

  Date

  1941 Feb 05-1941 Feb 13

  Reference

  HW 18/119

• Catalogue level

  Piece

  German naval air reports

  German naval air reports

  Held by

  The National Archives, Kew

  Date

  1942 Jun 30-1943 Jan 01

  Reference

  HW 18/101

• Catalogue level

  Piece

  German naval activity

  German naval activity

  Held by

  The National Archives, Kew

  Date

  1941 Jun 17-1941 Nov 04

  Reference

  HW 18/12

• Catalogue level

  Piece

  French naval messages

  French naval messages

  Held by

  The National Archives, Kew

  Date

  1940 Aug 13-1940 Aug 26

  Reference

  HW 18/134

• Catalogue level

  Piece

  Handbook on Italian service signals organisation (7parts) Covers navy,army and air...

  Handbook on Italian service signals organisation (7parts) Covers navy,army and air force communications

  Held by

  The National Archives, Kew

  Date

  1943 May 01-1943 May 01

  Reference

  HW 18/109

• Catalogue level

  Piece

  U-Boat methods of combined attack on convoys (ZIP/ZG/116)

  U-Boat methods of combined attack on convoys (ZIP/ZG/116)

  Held by

  The National Archives, Kew

  Date

  1941 Feb 01-1941 Oct 31

  Reference

  HW 18/6

• Catalogue level

  Piece

  French naval messages

  French naval messages

  Held by

  The National Archives, Kew

  Date

  1940 Aug 01-1940 Aug 13

  Reference

  HW 18/133

• Catalogue level

  Piece

  Naval Headlines

  Naval Headlines

  Held by

  The National Archives, Kew

  Date

  1941 Jun 21-1941 Dec 31

  Reference

  HW 18/92