Victoria Cross | International Red Cross and Red Crescent Movement | American Red Cross | operating system | Super Nintendo Entertainment System | Nintendo Entertainment System | Military Cross | Android (operating system) | Global Positioning System | double bass | Solar System | X Window System | Distinguished Service Cross | Christian cross | London King's Cross railway station | International Committee of the Red Cross | Navy Cross | Korean Broadcasting System | Distinguished Service Cross (United States) | cross-country skiing | Iron Cross | System of a Down | Domain Name System | David Cross | Knight's Cross of the Iron Cross | Double (association football) | Seoul Broadcasting System | North Carolina Community College System | International Federation of Red Cross and Red Crescent Societies | Cross River State |
Thomas Argyll Robertson OBE (1909-1994), known as "Tommy" or by his initials as "TAR", was a Scottish MI5 intelligence officer, responsible during the Second World War for the Double Cross System disinformation campaign against the German intelligence services in which every German agent in Britain, with the exception of one who committed suicide without having been detected by the authorities, was actually working for British intelligence.
John Cecil Masterman, The Double-Cross System in the War of 1939-1945, Yale University Press, 1972.