May 16, 1940
Operation AB
Operation AB (Extraordinary Pacification Operation) was a mass extermination action carried out by the Nazis in occupied Poland from May to July 1940. Its aim was to murder Polish intelligentsia and social elites. As a result of the operation, approximately 6,000 people were arrested, of whom over 3,500 were murdered in mass executions, mainly in Palmiry near Warsaw.
