Cryptanalysis of the Enigma Bletchley Park to describe the network that used the same Enigma setting sheets. Initially these were recorded using coloured pencils and were given the names "red", "light blue" etc., and later the names of birds such as "kestrel". During World War II the settings for most networks lasted for 24 hours, although towards the end of the war, some were changed more frequently. The sheets had columns specifying, for each day of the month, the rotors to be used and their positions, the ring positions and the plugboard connections. For security, the dates were in reverse chronological order down the
The Kingdom of the Netherlands During World War II it were televised in a documentary television series from the 1960s, "De Bezetting" ("The Occupation"), directed by Milo Anstadt. It established de Jong as a figure of national importance and a media personality. He was later chastised for being overly concerned with his own image and reputation, a critique extended to his historical work—for instance, his cursory investigation in 1965 of the activities during World War II of Claus von Amsberg, then fiancé of crown princess Beatrix, was deemed insufficient and too positive (as opposed to his investigation in 1977 of politician Wim Aantjes, in which he too easily reached