Category:Double-Cross System
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British World War II counter-espionage operation | |||||
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The Double-Cross System or XX System was a World War II counter-espionage and deception operation of the British Security Service
Subcategories
This category has the following 5 subcategories, out of 5 total.
Media in category "Double-Cross System"
The following 4 files are in this category, out of 4 total.
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Johnny Jebsen.png 508 × 704; 251 KB
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MI5 Case Officer Tomás (Tommy) Harris 1942.jpg 144 × 181; 6 KB
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Nathalie Sergueiew, codename Treasure, WWII agent.jpg 1,600 × 978; 170 KB
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Stolperstein Hartungstraße 7a (Johann-Nielsen Jebsen) in Hamburg-Rotherbaum.JPG 2,196 × 2,148; 2.56 MB