EWT to AGD July 2 re GPO and protest from slip-readers, EWT to HCS Maine at HQ, slip-readers...

HW 14/107

1944 July 1-15

EWT to AGD July 2 re GPO and protest from slip-readers, EWT to HCS Maine at HQ, slip-readers at Aldford House, Northleach, Electra House and Denmark Hill to come under operational control of CLSW from July 14, admin to remain with Maine; WTC to OC Beaumanor July 1 re printer cover, reply July 3, unit ready to receive civilian operators for 12 additional sets, WTC to OC July 5 WTC to contact CSO (SW) and request up to 6 printer positions to be manned by civilian operators from Denmark Hill; Winterbotham at HQ complains to Air Cdr Buss, D of I (R) at AM July 4 over compromise of Sigint, (sinking of Scharnhorst from Sigint tip-off) by AM rep at Treasury meeting of June 30 to discuss pay increases for PO Sigint operators; DMS to HBS July 1 on talks with OC Forest Moor on June 30; Hut 3 report to WTC July 1 on E cover targets and results, DMS to BEW July 3 with status of E positions at UK stations; WTC summary July 1 of UK Army DF facilities and future requirments; OC Kedleston Hall to J de G July 2 thanking him for his lecture to staff at the Hall, reply from de Grey July 3, copy of J de G's lecture to Chicksands' operators July 7; J de G to WEC July 2 on new arrangements for Tean search; WTC to DDI 4 July 3 complaining that Chicksands had failed to meet target figures for sets and operators, reply July 6, station to be up to 100% by end of August, WTC disputes AM figures July 11; DMS to BEW July 5 with status of US station at Bexley Heath, WO refuses Harpendon as contingency site for Bexley, RAF site at Monks Risborough possible replacement; WTC to DD (Y) July 5, strongly worded letter replying to DD (Y)'s of June 22, mainly disagreement over GP cover at Shenley but also over general principles of who controls Army Sigint stations, BP or MI8, WTC to DD (Y) July 6 re DD (Y)' letter of June 24; paper from HBS to EWT on inter-relationship between AD (CI), WTC and Comms Section, also argues that Sigint Committees and London Sigint Board had outlived their usefulness, all Sigint functions could now be carried out by GCCS working directly with Ministries, argues for new Directorate post of DD (CT) i/c BP Comms Section and FORDE; WTC to SLC HQ July 6, GP intercept no longer required from Poles at Stanmore, reply from SLC July 8, Source JX informed; statistics from BP to OC Cheadle July 11 showing printer circuits from Cheadle were wasting some 70% of transmission time; WTC to OCs UK Service Sigint stations July 14, stations to provide weekly reports on number of sets manned continuously over 24 hours, part-time sets used for break relief operators to be listed separately; DD (Y) to EWT July 13 with details of Army mobile Sigint operations; CSO (SW) to OCs UK Army Sigint stations, next Station Commanders' Conference to be at Beaumanor, vice Kedleston, because of accommodation problems in Derby area; Gp Capt Jones to DDMI (O) July 1 with strong case for promoting 8 Army captains in Hut 3 to rank of major; Hut 3 complaint to DD 3 July 3 about MI6 Section V and lack of feed back to BP for Sigint report distribution purposes of details of their reps abroad; Capt Cowan to DD 1 July 5 re distribution of Umkehrwalze D comms equipment to German forces; Chicksands DO to work in Hut 6 July 10-15; Hut 6 minute July 9 Germans considered Red Key compromised July 6, key to be abandoned, results could be beneficial to BP; letter of thanks July 7 to DD 3 from Capt Frank Slocum of Ops Div Naval Staff, thanks to EWT and DD (NS), Newman of Ops Div to return to BP to talk to NS; instructions by Hinsley of NS July 1 on issuing of XLs based on Naval sources, DOE between NS and Hut 3; Lt Col Blair-Cunnynghame to Col Bicher of SIS ETOUSA July 1 asking US to participate in party being assembled at BP to work on new German Army cypher expected to come into use Aug 1; Col Scott at SHAEF offers 26 personnel headed by Major Sherwood July 5 as 21 AG contribution to BP central party for exploiting low/medium grade cyphers, more from Scott on potential future problems with US over distribution of intercept from W Theatre to BP; Winterbotham at HQ asks DD 1 July 3 if bombing of Zossen would have adverse effect on BP Sigint, BP considers it would deny SIS and MI5 of main source of intelligence on German agents abroad and in UK; Met Section weekly reports for w.e. July 1,8,15; AS instruction July 1 for reporting on V1 flying bombs, DD (AS) to D of I (R) via DDI 4 July 3 stating that BP had now isolaated Klavier cypher as being used between Crossbow V1 flying bomb units in France, AS request for all available intelligence on this German new secret weapon, DD (AS) to EWT and DDI 4 July 7 summarising Klavier cover, mainly at Capel; AS to SHAEF 21 AG July 1 agreeing that German Army P/L should be done by field units only, could 365 WU and Det A deal with air P/L in similar way? July 2 SHAEF summary of Sigint service during initial assault of Overlord, Sigint responsible for destruction of some 50% of enemy aircraft claimed destroyed by Fighter Direction Tender off beach-head, SHAEF critical of BP AS reports, received late and too few and far between, protest from DD (AS) to SHAEF July 2, reply July 10, DD (AS) to Gp Capt Scott-Farnie at HQ AEAF same subject; AS reply July 3 to US traffic query via ETOUSA, unidentified traffic is broadcast of recommended freqs for specific distances at various times of day; terms of reference July 10 for Operational Sub-section of AS, including Operational Watch; liaison with US in Washington, EWT to Mc'Cormack there July 11 informing him Met Office satisfied that US was no longer including UK Top Secret Sigint in Confidential met publication, although now proven that they did so from Oct 1943; SSA Washington to BP July 13 1945 for SLU Frankfurt for General Marshall, message from Japanese Foreign Minister to Japanese Ambassador in Moscow for Soviet Foreign Minister Molotov, to reach Molotov before opening of Allied Three Power Summit, Japan will fight on as long as Britain and US insist upon unconditional surrender although she desires a peaceful settlement, Japanese delegation wishes Soviet permission to enter Russia with Emperor's letter for Moscow; liaison with Col Black and French Sigint, exchange of Spanish material, DD (AS) to DD 1 and reply July 14; Chicksands' cover returns for w.e. June 27, July 2,9; Foynes Radio report for w.e. June 30, Col Vivian of SIS authorises that monitoring of this task should end at midnight July 1/2; BP reporting instructions for German mines/mining July 7; changes in AS BMP reporting July 11; Hut 3 DO to C July 13 re Abwehr report on impending sabotage operations in France; AS instruction July 14 all CX/MSS or Ultra reports to carry the name of individual recipient in addition to addressed authority

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