Georges Ladoux was an army captain and the head of French counter-espionage during World War I, described as "a plump, square-faced man given to smoking a pipe and slicking his dark hair back with shiny oils." He transferred from counter-espionage to the Deuxième Bureau in February 1917. He was responsible for recruiting Mata Hari as a French spy. Ladoux was later arrested for being a double agent himself. He was later cleared of all charges.
References: http://www.trutv.com/library/crime/terrorists_spies/spies/hari/6.html
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