DMI and CIGS to visit BP on Apr 16, programme for visit; letter from EWT to C on...

HW 14/34

1942 Apr 11-20

DMI and CIGS to visit BP on Apr 16, programme for visit; letter from EWT to C on opportunities lost because GCCS not tipped off in advance about Allied war plans; paper by Lt Cdr AG Saunders, previously Head of Hut 3, on his proposals for re-organisationof GCCS, case for 5 Controllers or Divisional Heads respectively in charge of intercept, cryptography, intelligence, communications and security, and UK Comsec, supporting chart illustrated GCCS Sigint sources and processing chains; detailed summary by AD (S) on staff shortages in various areas of BP, staff shortages as at Feb 2 in PS Milner-Barry's section, WG Welchman's minute to EWT on staff shortages in Hut 6; organisation within Hut 6, outlook for Hut 6 processing, 1942-1943; statistics for work processing in Huts 3 and 6 as at Apr 13, measures to reduce backlog in Hut 3; liaison between SALU and Day Fighter Sections; handling of Abwehr Orange key material after leaving Hut 6; fortnightly section reports, NS too busy to participate; support from BTM, special tabulating machines at BP in future to be known as Cantabs, details of future supply and working of Cantabs; requisitioning of Court Haw House for GCCS, probably in association with Metropolitan Police intercept site at Denmark Hill, case for Sigint research by police; case for more Sigint men and equipment to intercept German teleprinter, a developing problem for BP; results of 4th Special Sigint Course at 50 Signals Depot, Mar 30-Apr 10; AS report on GAF reaction to RAF attack on Hazebrouck, Apr 12; report on GAF developments from Wing Cdr Humphries at BP to Gp Capt Winterbotham at AM; liaison with South Africa, Canada, Russia, and COIS Colombo; correspondence with CBME, personnel for 54 WU in ME; Sigint report on GAF Little Screw beacon position indicator system; build up of GAF transport aircraft in Eastern Prussia, GAF crack Air Corps withdrawn from Russian Front, Central Sector; letter from US General to AM putting case for common US/UK communications and cypher systems; copy of Act 814 of ACI of Apr 18, all Army cypher personnel to transfer to Royal Signals; letter from R Baudouin, working for GCCS, to Col Friedman of US Army Sigint, on Friedman's request on behalf of the War Department for 1000 copies of Baudouin's book Elements de Cryptographie

Public Record(s)

Open Document, Open Description

Topics

Asia

Europe and Russia

Air Force

Conflict

Maps and plans

Intelligence

Americas

Communications

Armed Forces (General Administration)

Operations, battles and campaigns

Africa