The Chełmno trials were a series of consecutive war-crime trials of the Chełmno extermination camp personnel, held in Poland and in Germany following World War II. The cases were decided almost twenty years apart. The first judicial trial of the former SS men – members of the SS-Sonderkommando Kulmhof – took place in 1945 at the District Court in Łódź, Poland. The subsequent four trials, held in Bonn, Germany, began in 1962 and concluded three years later, in 1965 in Cologne.
A number of camp officials, gas-van operators and SS guards, were arraigned before the court on charges of war crimes and crimes against humanity committed at Chełmno (a.k.a. Kulmhof) in occupied Poland in the period between December 1941 and January 1945. The evidence against the accused, including testimonies by surviving witnesses, former prisoners, and mechanics attending to repair needs of the SS, was examined in Poland by Judge Władysław Bednarz of the Łódź District Court (Sąd Okręgowy w Łodzi). Three convicted defendants were sentenced to death, including the camp deputy commandant Oberscharführer Walter Piller (wrongly, Filer); the gas van operator Hauptscharführer Hermann Gielow (Gilow), as well as Bruno Israel from Ordnungspolizei (Order Police), his sentence was later commuted to life. All three were members of the SS Special Detachment Kulmhof responsible for the extermination of Jews and non-Jews during the Holocaust in occupied Poland.
