François Naville ( 14 June 1883 &ndash; 3 April 1968 ) was a Swiss physician , director of the medico-legal Institute of the University of Geneva , the only truly neutral expert in the international Katyn Commission investigating the Soviet Katyn massacre of some 22,000 Polish prisoners of war , mostly Polish Army officers , arrested and imprisoned in the course of the Soviet and German invasion of Poland . Their bodies were discovered in a series of large mass graves in the forest near Smolensk in Russia following the Nazi German Operation Barbarossa
Katyn massacre
Katyn massacre
François Naville