At the start of the First World War, with the assistance of the police, MI5 rounded up all the agents of any significance working for German naval intelligence. No remaining agent was able to...

2023年5月5日 · During the First World War, MI5 used an unexpected group to transport the agency's top-secret messages: the Girl Guides.

Throughout the First World War, Germany continually attempted to infiltrate Britain, but MI5 was able to identify most, if not all, of the agents dispatched. During the Second World War, it developed the Double-Cross System. This involved attempting to 'turn' captured agents wherever possible, and use them to mislead enemy intelligence agencies.

Major General Sir Vernon George Waldegrave Kell, KBE, CB (21 November 1873 – 27 March 1942) was a British Army general and the founder and first Director of the British Security Service, otherwise known as MI5. Known as K, he was described in Who's Who as "Commandant, War Department Constabulary". [1]

2016年4月6日 · The work, and consequently the organisation, of such a Bureau [MI5] is naturally divided into two main Branches, (1) the investigation of particular cases involving a definite suspicion of espionag...

2022年5月6日 · During The Great War, Girl Guides did not take on military roles but instead became hospital volunteers, first aiders, entertained wounded soldiers, worked on the land and even volunteered in soup kitchens. A War Service badge was created in 1914 and to receive it they had to do one of the following.

National Archives is making over 150 top secret MI5 files of organisations and individuals involved in espionage or under surveillance during the period of the First World War available online...

Discover how MI5 works to protect against threats to national security through intelligence gathering techniques, partnerships and legislation. Find out how you can play your part in keeping the...

Remembering the lives of people who worked for the Directorate of Military Intelligence Section 5 (MI5). At the start of WW1, the role of MI5 was quite restricted, existing purely to ensure national security through counter-espionage.

Details of the work of MI5 up to the end of the First World War may be found in the Service's surviving records from this period, which were released for public view by the Public Record Office...