children are murdered on the spot. Belzec, Polish spelling Bełżec [ ˈ b ɛ u ̯ʐɛ t ​͡ s] , was the first of the Nazi German extermination camps created for implementing Operation Reinhard during the Holocaust . Operating from 01942-03-17 March 17, 1942 to the end of 01943-06-01 June 1943,