Letter to DDMI (O) from EWT on WO request for more Sigint from Russian Front, little...

HW 14/64

1943 Jan 11-20

Letter to DDMI (O) from EWT on WO request for more Sigint from Russian Front, little prospect of improvement Jan 11, AD (S) appoints Study Circle Jan 16 for Southern Russia, Black Sea, Caucasus and Aegean areas, group to meet fortnightly; list of Sub-section Heads in AS Jan 11, statistics showing the various codes being received in AS and percentages readable, AS work on BMP report series and night fighter summaries, HAS to EWT Jan 11 on advantages of having a SALU representative in Air HQ Algiers and subsequent endorsements from EWT and AD (S) on continuing this policy; methods of decyphering U-Boat traffic including supporting work on weather codes Jan 11; recruitment of Sigint operators, unsuitable candidates for training at PO station at Whitchurch, memo to AGD from A Rees Jan 11, letter from AGD to HC Kenworthy supporting Rees's case Jan 16; supply of met traffic to BP from Dunstable; identification of interference on Sigint frequencies, Major Lithgow takes steps to improve reporting of this problem Jan 14-16; report from HC Kenworthy at Knockholt on status and processing of German teleprinter there Jan 11, reply from Lt Col Sayer Jan 14, intercept of Codfish and Herring at Knockholt Jan 16, tasking of WOYG at Bishops Waltham with German Army teleprinter; AD (S) asks Col Pritchard for report on organisation of his section Jan 16, detailed work and staff details of Domino, Non-indicator and F Army Sections under Capt Shiner Jan 18; liaison with Washington, EWT at BP and Major GG Stevens UK Sigint representative in Washington, BP NS card index photographed and given to US; EWT to Lt Col Bicher of ETO US Army re US personnel working at BP, US officers to replace US NCOs Jan 15, WO sends copies of Sigint working aids and instructions to Bicher Jan 16; correspondence with CBME and various Sigint authorities in ME, Director CBME acquires code-books taken from Italian Agent in Syria, asked to despatch them to BP Jan 17, CBME establishment correspondence with AM on civilian/Service equivalent grades/ranks, HAS to contact Director CBME; signal to WO from AF HQ Algiers on liaison with French and US Sigint units in N Africa, to be discussed at YC meeting of Jan 13, BP expresses caution on both counts, US Sigint operators arrive Algiers for training Jan 12; Lt Col Sayer's letter to MI-8 critical of MI-4's attitude to GCCS and WOYG over evaluation of new receiver Jan 12, letter from MI-8 to Sigs 4 supporting GCCS view Jan 15; reply to Lord Farrer's query of Jan 5 on BJ report; 7-page paper by CSC of MI-6 Gambier Parry and approved by C giving MI-6 views on UK Sigint with recommendations for the future Jan 17; draft from GHQ Home Forces entitled Notes on Y Organisation in the Field for comments by GCCS Jan 14; paper by Lt Col BE Wallace of GHQ Home Forces entitled Related Functions of Interception, W/T I, Cryptography and Intelligence sent to Lt Col HB Sayer at BP for comments Jan 18, Sayer replies Jan 19; French military still using Armistice cypher held by Axis Jan 11; Sigint task transferred from Cheadle to Chicksands with accompanying transfer of 38 RAF operators

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