Hans-Thilo Schmidt (13 May 1888 – 19 September 1943) codenamed Asché or Source D, was a spy who sold secrets about the German Enigma machine to the French during World War II. The materials he provided facilitated Polish mathematician Marian Rejewski's reconstruction of the wiring in the Enigma's rotors and reflector; thereafter the Poles were able to read a large proportion of Enigma-enciphered traffic.
Philippe Rondot (5 October 1936 – 31 December 2017) was a French general, formerly an important personality of the French intelligence. He worked for both the domestic intelligence DST and the foreign intelligence DGSE (traditionally rival services) and was an aide to several Defence Ministers.
Pierre Brochand (born 4 July 1941, in Cannes) is a former director of the French Directorate-General for External Security (DGSE). He was previously a diplomat. He was a witness to Operation Frequent Wind and the Fall of Saigon in April 1975 at the end of the Vietnam War.Alumnus of the École nationale d'administration (ENA), he is also a graduate of the École des Hautes Études Commerciales (HEC).