The Double-Cross System or XX System was a World War II counter-espionage and deception operation of the British Security Service (MI5).
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Feb 17, 2011 · Thirteen German agents were executed in Britain during the war, but more than three times that number had actively co-operated with their MI5 ...
Its main wartime success was taking the lead role in the now celebrated 'Double Cross System', which fed disinformation to Germany through turned German agents.
ABSTRACT. The success of British double-cross operations in World War Two is well-known. However, the techniques used by writers in MI5 to manipulate ...
... double agents who fed false information to the Germans concerning military strategy throughout the war. This was the famous "Double Cross" system, a highly ...
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The amazing true story of how British intelligence penetrated and practically operated Nazi Germany's spy network within the British Isles.