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
Monument to the Dead of World War II and cools the interior temperature. The "Monument to the Dead of World War II" was designed by architects Mark Netto Konder and Helio Ribas Marinho, the winners of a national competition. The monument construction was completed in 1960. The primary vertical feature is the monumental portal, an abstract memorial sculpture of formed concrete, that is tall. Other artworks at the Monument include: Monument to the Dead of World War II The Monument to the Dead of World War II (), also the Monument to the Brazilian Soldiers of World War II, commemorates Brazil's participation and losses in the Second World