Thomas Argyll Robertson OBE (27 October 1909 – 10 May 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" ("XX") disinformation campaign against the German intelligence services. Included in this was Operation Mincemeat.
The disinformation campaign was successful in persuading the Germans that the invasions of Sicily (1943) and Normandy ( D-Day) (6 June 1944) were going to occur elsewhere. [1]
Earlier in 1936, Robertson oversaw the interception of telephone calls of Edward VIII, in which capacity he was the first to learn of the king's decision to abdicate.