After German invasion of Poland , '' Selbstschutz '' worked together with the '' Einsatzgruppen '' to massacre Poles . '' Selbstschutz '' took part in the first action of elimination of Polish intelligentsia , the mass murders in Piaśnica , during which 12,000 to 16,000 civilians were murdered . An '' Intelligenzaktion '' was a plan to eliminate all Polish intelligentsia and Poland 's leadership class in the country . These operations took place soon after the fall of Poland , lasting from the fall of 1939 until the spring of 1940 ; 60,000 landowners , teachers , entrepreneurs , social workers , army veterans , members of national organizations , priests , judges and political activists were murdered in 10 regional actions . The Intelligenzaktions were continued by the German AB-Aktion operation in Poland
Intelligenzaktion
Intelligenzaktion
Volksdeutscher Selbstschutz