MI1

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For the 1996 film, see Mission: Impossible.

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 codebreakers like 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^{[citation needed]}

[edit] See also

• MI5 (British Security Service)
• Room 40

[edit] References

• FAQs about the History of the British Security Service

[edit] External links

• What happened to MI1 - MI4? MI5 FAQ

	United Kingdom Intelligence Agencies edit
Current: Government Communications Headquarters (GCHQ) • Security Service (MI5) • Secret Intelligence Service (MI6) • Defence Intelligence Staff (DIS) • Serious Organised Crime Agency (SOCA) • Joint Intelligence Committee (JIC)
Defunct agencies: MI1 • MI2 • MI3 • MI4 • MI7 • MI8 • MI9 • MI10 • MI11 • MI12 • MI13 • MI14 • MI15 • MI16 • MI17 • MI18 • MI19