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MI1 or British ''Military Intelligence, Section 1'' was a department of the British Directorate Of Military Intelligence , part of the War Office . It was set up during World War I . It contained "C&C", which was responsible for Code Breaking. In 1919 MI1 and the Royal Navy's Room 40 were closed down and merged into the Government Code and Cypher School ( GC&CS ). Oliver Strachey was in MI1 during WWI. He transferred to GC&CS and served there during WWII. World renown code-breakers such as Glyn Davis (of the United States Fort Meade ) and Arthur B. Campbell (of Dublin Intelligence & Information Repository) were drafted in to assist in the 1914-1919 era. SEE ALSO REFERENCES |
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