Kurt Gerstein joins the Waffen SS. Early next year he will be appointed head of the unit tasked with improving the efficiency of gas chambers.
In 1942 he participates in tests of Zyklon B in extermination camps to replace the use of gas vans as a means for exterminating Jews.
In 1942 Gerstein witnesses the mass gassing of Jews at Belzec. Gerstein originally joined the SS to investigate atrocities against Jews and is so disturbed by what he sees that he moves to inform people he hopes can help.
He first contacts Caesare Orsenigo, Papal Nuncio in Berlin, but he is rebuffed. He then contacts a staff member of Bishop Preysing in Berlin who supposedly sends Gerstein's report to the Vatican.