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  GC&CS miscellaneous papers: Japanese Interservice Secretariat 1944-1945. Centralization...

  GC&CS miscellaneous papers: Japanese Interservice Secretariat 1944-1945. Centralization of all correspondence on Japanese intelligence, cryptology and traffic analysis, which concerns the Japanese Military and Air Sections

  Held by

  The National Archives, Kew

  Date

  1944 Jan 28 - 1944 Dec 11

  Reference

  HW 62/24

• Catalogue level

  Piece

  Reports on the Spanish army, Spanish naval callsigns and results of RAF bombing raid...

  Reports on the Spanish army, Spanish naval callsigns and results of RAF bombing raid on German U-boat factory

  Held by

  The National Archives, Kew

  Date

  1941 Oct 31-1945 May 19

  Reference

  HW 22/24

• Catalogue level

  Piece

  Commercial messages sent in private company codes

  Commercial messages sent in private company codes

  Held by

  The National Archives, Kew

  Date

  1945 May 18-1945 Aug 11

  Reference

  HW 31/24

• Catalogue level

  Piece

  Commercial messages passed over diplomatic channels

  Commercial messages passed over diplomatic channels

  Held by

  The National Archives, Kew

  Date

  1944 Feb 01-1944 Feb 29

  Reference

  HW 32/24

• Catalogue level

  Piece

  Liaison between CBME and GC&CS on cryptanalysis of German air force messages

  Liaison between CBME and GC&CS on cryptanalysis of German air force messages

  Held by

  The National Archives, Kew

  Date

  1941 Jan 21 - 1943 Mar 03

  Reference

  HW 51/24

• Catalogue level

  Piece

  Bulgarian military attache decrypts

  Bulgarian military attache decrypts

  Held by

  The National Archives, Kew

  Date

  1945 Jul 26-1945 Oct 17

  Reference

  HW 24/2

• Catalogue level

  Piece

  Japanese naval decrypts

  Japanese naval decrypts

  Held by

  The National Archives, Kew

  Date

  1943 Jul 08-1943 Jul 14

  Reference

  HW 23/24

• Catalogue level

  Piece

  Verbatim German language texts issued as BP daily reports: all messages in GP Code...

  Verbatim German language texts issued as BP daily reports: all messages in GP Code No 3, including all intercepted messages in this code to/from concentration camps;

  Held by

  The National Archives, Kew

  Date

  1943 Mar-Apr

  Reference

  HW 16/24

• Catalogue level

  Piece

  Decrypts of Comintern messages: Moscow, USSR, with Amsterdam, Holland; London, Great...

  Decrypts of Comintern messages: Moscow, USSR, with Amsterdam, Holland; London, Great Britain, with Amsterdam, Holland. (Described at item level)

  Held by

  The National Archives, Kew

  Date

  1934 Feb-1936 July

  Reference

  HW 17/24

• Catalogue level

  Piece

  C to LPS: German Army seaborne operation against Crimea supported by 4th Air Corps...

  C to LPS: German Army seaborne operation against Crimea supported by 4th Air Corps in Nikolaev and supply situation in Libya

  Held by

  The National Archives, Kew

  Date

  1941 Aug 16

  Reference

  HW 1/24

• Catalogue level

  Piece

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

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

  Held by

  The National Archives, Kew

  Date

  1944 Apr 01-1944 May 04

  Reference

  HW 45/24

• Catalogue level

  Piece

  DD(C) - Deputy Director (Civil) - historical papers. Mostly planning for post-war

  DD(C) - Deputy Director (Civil) - historical papers. Mostly planning for post-war

  Held by

  Creating government department or its successor

  Date

  1944 Oct 03 - 1946 Jan 15

  Reference

  HW 53/24

• Catalogue level

  Piece

  German exploitation of Russian Air communications. Prisoner of war reports

  German exploitation of Russian Air communications. Prisoner of war reports

  Held by

  Creating government department or its successor

  Date

  1945 Oct 03 - 1946 Jan 08

  Reference

  HW 40/24

• Catalogue level

  Piece

  German naval activity in the Mediterranean including liaison with the Italian navy

  German naval activity in the Mediterranean including liaison with the Italian navy

  Held by

  The National Archives, Kew

  Date

  1944 Mar 19-1944 Aug 06

  Reference

  HW 18/24

• Catalogue level

  Piece

  Gibraltar Y Committee

  Gibraltar Y Committee

  Held by

  The National Archives, Kew

  Date

  1941 May 21 - 1943 Mar 11

  Reference

  HW 61/24

• Catalogue level

  Piece

  Security of electronic communications

  Security of electronic communications

  Held by

  Creating government department or its successor

  Date

  1961 Feb-1962 Oct

  Reference

  HW 9/24

• Catalogue level

  Piece

  Communications Subcommittee and 'E' Subcommittee Minutes of meetings 1-34 of the...

  Communications Subcommittee and 'E' Subcommittee Minutes of meetings 1-34 of the Communications Subcommittee, set up to oversee Y communications requirements: 29 May 1942 - 15 Oct 1943. This committee was superseded by the B Committee of the Signal I…

  Held by

  The National Archives, Kew

  Date

  1941 Mar 17-1943 Oct 15

  Reference

  HW 42/24

• Catalogue level

  Piece

  Commercial reports

  Commercial reports

  Held by

  The National Archives, Kew

  Date

  1940 Apr 01-1940 Apr 08

  Reference

  HW 29/24

• 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 Mar 15-1944 Mar 19

  Reference

  HW 35/24

• Catalogue level

  Piece

  Commander Task Force 317 report on intelligence aspects of Operation CORPORATE; minutes...

  Commander Task Force 317 report on intelligence aspects of Operation CORPORATE; minutes of Maritime Sigint Steering Group meeting; MOD paper Operation CORPORATE the intelligence lessons; P Division paper regarding Operation CORPORATE operational and …

  Held by

  The National Archives, Kew

  Date

  1982 Oct 29 - 1983 Feb 1

  Reference

  HW 92/24