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  Piece

  Ministry of Foreign Affairs, Berlin, and Angora, Bangkok, Batavia, Buenos Aires,...

  Ministry of Foreign Affairs, Berlin, and Angora, Bangkok, Batavia, Buenos Aires, Dairen, Harbin, Istanbul, Kabul, Las Palmas, Lima, Lisbon, Lourenco Marques, Luanda, Madrid, Sofia, Stockholm, Tangier, Tientsin, Tokyo, Tsingtau and Valparaiso. Regular…

  Held by

  The National Archives, Kew

  Date

  1943 Nov 01-1944 Apr 28

  Reference

  HW 36/2

• Catalogue level

  Piece

  Decrypts of all other GP codes other than No 3, issued as BP daily reports in GPD...

  Decrypts of all other GP codes other than No 3, issued as BP daily reports in GPD series

  Held by

  The National Archives, Kew

  Date

  1942 Oct-Dec

  Reference

  HW 16/36

• Catalogue level

  Piece

  Summaries for Aug 31

  Summaries for Aug 31

  Held by

  The National Archives, Kew

  Date

  1941 Aug 31

  Reference

  HW 1/36

• Catalogue level

  Piece

  Ministry of Foreign Affairs, Berlin, and Angora, Asuncion, Bangkok, Berne, Buenos...

  Ministry of Foreign Affairs, Berlin, and Angora, Asuncion, Bangkok, Berne, Buenos Aires, Kabul, La Paz, Las Palmas, Lisbon, Lourenco Marques, Madrid, Quito, Rio de Janeiro, Santa Isabel, Santiago, Teneriffe, Tientsin and Valparaiso. Regular war situa…

  Held by

  The National Archives, Kew

  Date

  1944 Apr 29-1944 Nov 20

  Reference

  HW 36/3

• Catalogue level

  Piece

  Communications Dossier No 4, 'Y' W/T Network [Sigint wireless telegraphy network]....

  Communications Dossier No 4, 'Y' W/T Network [Sigint wireless telegraphy network]. Notes on the establishment of a communications network to carry Sigint (before World War II intercept material from overseas was sent by shipborne bag)

  Held by

  The National Archives, Kew

  Date

  1937 Dec 10 - 1945 May 12

  Reference

  HW 50/36

• Catalogue level

  Piece

  Weekly summary reports on Second World War German army and air force communications

  Weekly summary reports on Second World War German army and air force communications

  Held by

  The National Archives, Kew

  Date

  1944 Jun 22-1944 Jul 08

  Reference

  HW 45/36

• Catalogue level

  Piece

  Comprises mainly messages between Ministry of Foreign Affairs, Berlin, and Buenos...

  Comprises mainly messages between Ministry of Foreign Affairs, Berlin, and Buenos Aires, Kabul, Lourenco Marques and Luanda; regular war situation reports from Berlin to all stations. Other locations include Adana, Angora, Bangkok, Barcelona, Beyoglu…

  Held by

  The National Archives, Kew

  Date

  1943 Jun 08-1943 Oct 31

  Reference

  HW 36/1

• Catalogue level

  Piece

  Report on speech secrecy system DELILAH, a technical description compiled by A M...

  Report on speech secrecy system DELILAH, a technical description compiled by A M Turing and Lieutenant D Bayley REME

  Held by

  The National Archives, Kew

  Date

  1945 Jan 01 - 1946 Dec 31

  Reference

  HW 25/36

• Catalogue level

  Piece

  Co-operation between GC&CS, Signals Liaison Unit (SLU), Washington and the Signal...

  Co-operation between GC&CS, Signals Liaison Unit (SLU), Washington and the Signal Security Agency (SSA), Washington on Axis communications and ciphers: main papers

  Held by

  The National Archives, Kew

  Date

  1943 Jan 01 - 1943 Dec 31

  Reference

  HW 57/36

• Catalogue level

  Piece

  Security of electronic communications

  Security of electronic communications

  Held by

  Creating government department or its successor

  Date

  1954 Jan-1956 Mar

  Reference

  HW 9/36

• Catalogue level

  Piece

  Information on German naval communications

  Information on German naval communications

  Held by

  The National Archives, Kew

  Date

  1940 May 08-1940 Aug 05

  Reference

  HW 18/36

• Catalogue level

  Piece

  Signals from British military mission in Moscow concerning liaison with the Russian...

  Signals from British military mission in Moscow concerning liaison with the Russian Y service

  Held by

  The National Archives, Kew

  Date

  1941 Jul 06 - 1942 Feb 17

  Reference

  HW 61/36

• Catalogue level

  Piece

  Reports and correspondence relating to enemy exploitation of Naval low grade codes...

  Reports and correspondence relating to enemy exploitation of Naval low grade codes in Far East

  Held by

  The National Archives, Kew

  Date

  1943 Oct 13 - 1945 Apr 30

  Reference

  HW 40/36

• Catalogue level

  Piece

  Admiralty Sigint related files: bound compilation dealing with such subjects as status...

  Admiralty Sigint related files: bound compilation dealing with such subjects as status and demobilisation of Naval and Post Office Sigint personnel and founding of GCCS

  Held by

  The National Archives, Kew

  Date

  1917-1920

  Reference

  HW 3/36

• Catalogue level

  Piece

  DSH 17 - Supplementary Crypotological Reports Nos. 1-9. Technical crypt reports

  DSH 17 - Supplementary Crypotological Reports Nos. 1-9. Technical crypt reports

  Held by

  The National Archives, Kew

  Date

  1944 Mar 01 - 1945 Mar 31

  Reference

  HW 53/36

• Catalogue level

  Piece

  Reports in the series QT/2501 to QT/3000.

  Reports in the series QT/2501 to QT/3000.

  Held by

  The National Archives

  Date

  1942 Sep 30-1942 Oct 07

  Reference

  HW 20/36

• Catalogue level

  Piece

  Message from Ministry of Foreign Affairs, Berlin, to German Embassy, Madrid, in original...

  Message from Ministry of Foreign Affairs, Berlin, to German Embassy, Madrid, in original German.

  Held by

  The National Archives, Kew

  Date

  1945 Jan 18-1945 Jan 18

  Reference

  HW 36/6

• Catalogue level

  Piece

  Reports of decrypts of Japanese military attachés messages

  Reports of decrypts of Japanese military attachés messages

  Held by

  The National Archives, Kew

  Date

  1944 May 06-1944 May 12

  Reference

  HW 35/36

• Catalogue level

  Piece

  Reports of Japanese army air decrypts

  Reports of Japanese army air decrypts

  Held by

  The National Archives, Kew

  Date

  1945 Jan 04-1945 Jul 20

  Reference

  HW 28/36

• Catalogue level

  Piece

  Reports of Japanese naval air decrypts

  Reports of Japanese naval air decrypts

  Held by

  The National Archives, Kew

  Date

  1945 May 02-1945 Jun 15

  Reference

  HW 27/36