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  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 Japanese communications and cyphers

  Held by

  The National Archives, Kew

  Date

  1945 Jun 01 - 1945 Aug 31

  Reference

  HW 57/4

• Catalogue level

  Piece

  Exchange of information on Japanese meteorological cyphers between GC&CS and signal...

  Exchange of information on Japanese meteorological cyphers between GC&CS and signal intelligence organisations in Washington, Ottawa and the Far East

  Held by

  The National Archives, Kew

  Date

  1943 Jan 01 - 1944 Jun 30

  Reference

  HW 57/6

• 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

  1944 Jan 01 - 1944 Dec 31

  Reference

  HW 57/35

• 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

  1945 Jan 01 - 1945 Sep 19

  Reference

  HW 57/34

• Catalogue level

  Piece

  Co-operation between USA, China and United Kingdom on Japanese communications and...

  Co-operation between USA, China and United Kingdom on Japanese communications and cyphers

  Held by

  The National Archives, Kew

  Date

  1942 Aug 05 - 1942 Sep 25

  Reference

  HW 57/11

• Catalogue level

  Piece

  Report on the British Y Service by Captain Brown of the US Signal Corps

  Report on the British Y Service by Captain Brown of the US Signal Corps

  Held by

  The National Archives, Kew

  Date

  1942 Jan 01 - 1942 Aug 31

  Reference

  HW 57/25

• Catalogue level

  Piece

  Co-operation with the US Army Sigint Organisation based at Arlington Hall, Washington

  Co-operation with the US Army Sigint Organisation based at Arlington Hall, Washington

  Held by

  The National Archives, Kew

  Date

  1944 Sep 01 - 1944 Dec 31

  Reference

  HW 57/32

• Catalogue level

  Piece

  GC&CS Army and Air Force Sigint Volume XIV: Intelligence - Army Y Service - European...

  GC&CS Army and Air Force Sigint Volume XIV: Intelligence - Army Y Service - European by Cmdr A M S MacKenzie RNVR

  Held by

  The National Archives, Kew

  Date

  1939 Sep 01 - 1945 Aug 30

  Reference

  HW 43/57

• Catalogue level

  Piece

  Enemy exploitation of RAF WTI (wireless telegraphy intelligence) in the Far East:...

  Enemy exploitation of RAF WTI (wireless telegraphy intelligence) in the Far East: miscellaneous reports and correspondence

  Held by

  The National Archives, Kew

  Date

  1944 Mar 22 - 1945 Jul 31

  Reference

  HW 40/57

• Catalogue level

  Piece

  Decrypts of Japanese naval air messages

  Decrypts of Japanese naval air messages

  Held by

  The National Archives, Kew

  Date

  1944 Nov 13-1945 Jul 31

  Reference

  HW 27/57

• Catalogue level

  Piece

  Including German report on Franco-German military cooperation in Levant

  Including German report on Franco-German military cooperation in Levant

  Held by

  The National Archives, Kew

  Date

  Jan 22 1942-Jan 25 1942

  Reference

  HW 5/57

• Catalogue level

  Piece

  Soviet Comintern messages: ISCOT 401-500

  Soviet Comintern messages: ISCOT 401-500

  Held by

  The National Archives, Kew

  Date

  1944 Oct 21-1944 Nov 15

  Reference

  HW 17/57

• Catalogue level

  Piece

  Telegrams passing between the Spanish Air Attach? in Rome and (mainly) the Spanish...

  Telegrams passing between the Spanish Air Attach? in Rome and (mainly) the Spanish Air Staff in Madrid

  Held by

  The National Archives, Kew

  Date

  1942 Mar 12-1943 Oct 3

  Reference

  HW 21/57

• Catalogue level

  Piece

  Log book of COM report distribution

  Log book of COM report distribution

  Held by

  The National Archives, Kew

  Date

  1942 Aug 17-1942 Dec 29

  Reference

  HW 32/57

• Catalogue level

  Piece

  Communications and cypher systems of army signals intelligence

  Communications and cypher systems of army signals intelligence

  Held by

  The National Archives, Kew

  Date

  1942 Dec 26 - 1944 Mar 14

  Reference

  HW 51/57

• Catalogue level

  Piece

  Staff recruitment, selection and pay; WRNS postings, WRNS to discontinue term Station...

  Staff recruitment, selection and pay; WRNS postings, WRNS to discontinue term Station X for BP, to be designated HMS Pembroke V from Nov 15, requisitioning of house in Adstock, Winslow, Bucks for Wrens, details of initial inspection; Hut 6 plans for …

  Held by

  The National Archives, Kew

  Date

  1942 Nov 1-10

  Reference

  HW 14/57

• Catalogue level

  Piece

  62760-63709. 63018-63021 missing at transfer. 63505-63509 not used

  62760-63709. 63018-63021 missing at transfer. 63505-63509 not used

  Held by

  The National Archives, Kew

  Date

  1943 Jul 01-1943 Jul 16

  Reference

  HW 19/57

• Catalogue level

  Piece

  Collection of reports on wide-ranging subjects, including moves of various senior...

  Collection of reports on wide-ranging subjects, including moves of various senior Staffs from Berlin: effect on German Armed Services of severe shortages of fuel, weapons and ammunition; German intentions in Italy; new OKW OKH Headquarters in Berch…

  Held by

  The National Archives, Kew

  Date

  1945 May 1-1945 July 31

  Reference

  HW 13/57

• Catalogue level

  Piece

  GP traffic No 12, plain language messages in German

  GP traffic No 12, plain language messages in German

  Held by

  The National Archives, Kew

  Date

  1943 Oct

  Reference

  HW 16/57

• Catalogue level

  Piece

  Kesselring's order of the day outlining tasks to help fulfil Fuehrer's Great Plan....

  Kesselring's order of the day outlining tasks to help fulfil Fuehrer's Great Plan. 2nd Army requests air attacks on ridge north of Chernigov and on artillery concentrations. Summary of operations from 8th Air Corps to 1st Airfleet for Sept 6: Leningr…

  Held by

  The National Archives, Kew

  Date

  1941 Sept 9

  Reference

  HW 1/57