Cryptanalysis of the Enigma by the letters on the top row of the Enigma keyboard. So, "continuation of message sent at 2330" was represented as "FORTYWEEPYYWEEPY". "Cribs" were fundamental to the British approach to solving Enigma keys, but guessing the plaintext for a message was a highly skilled business. So in 1940 Stuart Milner-Barry set up a special "Crib Room" in Hut 8. Foremost amongst the knowledge needed for identifying cribs was the text of previous decrypts. Bletchley Park maintained detailed indexes of message preambles, of every person, of every ship, of every unit, of every weapon, of every technical term and of repeated
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