MI11, or Military Intelligence, Section 11, was a department of the British Directorate of Military Intelligence, part of the

War Office The War Office was a department of the British Government responsible for the administration of the British Army between 1857 and 1964, when its functions were transferred to the new Ministry of Defence (MoD). This article contains text from t ...

. During the Second World War, MI11 was responsible for field security: protecting

British British may refer to: Peoples, culture, and language * British people, nationals or natives of the United Kingdom, British Overseas Territories, and Crown Dependencies. ** Britishness, the British identity and common culture * British English, ...

military personnel from enemy agents and "

fifth columnist A fifth column is any group of people who undermine a larger group or nation from within, usually in favor of an enemy group or another nation. According to Harris Mylonas and Scott Radnitz, "fifth columns" are “domestic actors who work to un ...

s" amongst civilian populations, in theatres of war. As such, MI11 assumed a role formerly assigned to the

Field Security Police The Royal Military Police (RMP) is the corps of the British Army responsible for the policing of army service personnel, and for providing a military police presence both in the UK and while service personnel are deployed overseas on operations ...

(which had itself replaced the

British Army The British Army is the principal land warfare force of the United Kingdom, a part of the British Armed Forces along with the Royal Navy and the Royal Air Force. , the British Army comprises 79,380 regular full-time personnel, 4,090 Gur ...

's Intelligence unit before World War I). Section 11 was disbanded after World War II.

External links

574 FIELD SECURITY SECTION OF 3 SPECIAL SERVICE BRIG
Groups of World War II Security Defunct United Kingdom intelligence agencies Military communications of the United Kingdom War Office in World War II British intelligence services of World War II {{UK-mil-stub