Stock Photo - The discovery of the mass graves in Katyn (Russia) by the German Wehrmacht in February 1943 - the Nazi Propaganda! on the back of the image is dated 16 April 1943: ""The mass murder of Polish officers committed by the GPU. The detection of the bloody deed in Katyn Forest, which again unmasks Bolshevism as an organized mass murder, England and the U.S. as the accomplices of the Soviet criminals, provoked profound indignation and greatest horror in the whole cultural world. Everyone among the members of two Polish delegations who had the opportunity to see the location of the unimaginable Bolshevist murderous deeds with their own eyes was horrified about the bestiality and unrestrained urge to kiell of the GPU hangmen. Our image shows one of the mass graves in Katyn Forest, in whcih the corpses of the Polish officers killed by GPU hangmen were found."" Photo: Berliner Verlag/Archiv. - Katyn/Smolensk/Russia