150 • DEPOT OF MILITARY KNOWLEDGE
In August 1941 he made the first of three transatlantic visits to
America to negotiate signals intelligence agreements, and in 1943 he
was placed in charge ofGCHQ’sDiplomatic Sectionin London and
effectively removed from the senior management, which caused him
much bitterness. The rancor was exacerbated when his deputy, Ed-
ward Travis, was placed in charge of Bletchley Park and given a
knighthood. After the war Denniston taught French and Latin at a
prep school and died in 1961, without any obituary in theTimes.DEPOT OF MILITARY KNOWLEDGE.In March 1803 the quar-
termaster general, Sir Robert Brownrigg, established a Depot of Mili-
tary Knowledge to collect intelligence in peacetime and prepare
maps. Colonel Lewis Lindenthal was placed in charge of the Library
Section, which became the repository of information about topogra-
phy and enemy forces.
DEPUTY DIRECTOR-GENERAL OF THE SECURITY SER-
VICE.The deputy director-generals ofMI5have beenEric Holt-
Wilson(1909–40), Jasper Harker (1940–47),Guy Liddell(1947–
52),Roger Hollis(1952–56),Graham Mitchell(1956 –63),Martin
Furnival Jones(1963–65),Anthony Simkins(1965–71),Michael
Hanley(1971–72),Ronald Symonds(1972–76), John Jones (1976 –
81), Royd Barker (1981–83), Cecil Shipp (1983–85), David Ranson
(1985–91),John Alpass(1991–94),Eliza Manningham-Buller
(1997–2000), Fraser Wilson (2000–04), and Jonathan Evans
(2004 – ).
DE ́RICOURT, HENRI.A skilled pilot and a supporter of Charles de
Gaulle’s Free French resistance, Henri De ́ricourt was appointed the
air movements officer forF SectionofSpecial Operations Execu-
tive(SOE) and codenamedgilbert. Between January 1943, when
he was parachuted into enemy occupied France, and April 1944,
when he returned to England, De ́ricourt organized 15 clandestine
flights and headed a circuit codenamedfarrier. However, by his
own admission, he was also in constant contact with theSicherheits-
dienst(SD) in the person of Sturmbannfu ̈hrer Karl Boemelberg, with
whom he had been acquainted in Paris before the war while he had
been an Air France pilot and the latter had been attached to the Ger-