T. A. Robertson
Not to be confused with B. A. Robertson.
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. Included in this was Operation Mincemeat. The disinformation campaign was successful in persuading the Germans that the invasions of Sicily (1943) and Normandy (1944) were actually going to occur elsewhere.