Katyn massacre

Katyn massacre
A massacre in Katyn forest in the western USSR. In 1943 the German army claimed to have discovered a mass grave of some 4500 Polish officers, part of a group of 15,000 Poles who had disappeared from Soviet captivity in 1940 and whose fate remained unknown. Each victim had a bullet in the base of his skull. The Soviet Union denied involvement in the massacre until April 1990 , when it was confirmed that the officers had been killed in the early days of close Nazi-Soviet collaboration, by order of Stalin.