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
That Was the Week That Was Four to celebrate the 40th anniversary. In a list of the 100 Greatest British Television Programmes up by the British Film Institute in 2000, voted by industry professionals, "That Was The Week That Was" placed 29th. Sherrin attempted to revive the formula with "Not So Much a Programme, More a Way of Life" but was less successful. An American version was on NBC, initially as a pilot episode on 10 November 1963, then as a series from 10 January 1964 to May 1965. The pilot featured Henry Fonda and Henry Morgan, guests Mike Nichols and Elaine May, and supporting performers