Sonya Esmée Florence Butt MBE (14 May 1924 – 21 December 2014), also known as Sonia d'Artois, code named Blanche, was an agent of the clandestine Special Operations Executive during the Second World War. SOE agents allied themselves with groups resisting the occupation of their countries by Axis powers. The purpose of SOE was to conduct espionage, sabotage, and reconnaissance in occupied countries. The SOE supplied resistance groups with weapons and equipment parachuted in from England.