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Willi Mentz
Born (1904-04-30)30 April 1904
Died 25 June 1978(1978-06-25) (aged 74)
Place of birth Schönhagen, Germany
Place of death Niedermeien, Germany
Allegiance  Nazi Germany
Service/branch Flag of the Schutzstaffel.svg Schutzstaffel
Rank SS-Unterscharführer Collar Rank.svg Unterscharführer, SS
Unit 3rd SS Division Logo.svg SS-Totenkopfverbände
Commands held Treblinka extermination camp

SS-Unterscharführer Willi Mentz (30 April 1904 – 25 June 1978) was a member of the German SS in World War II and a Holocaust perpetrator who worked at Treblinka extermination camp during the Operation Reinhard phase of the Holocaust in Poland. Mentz was known as "Frankenstein" at the camp.[1][2]


Born in Schönhagen near Brandenburg, Mentz joined the NSDAP in 1932. He was a sawmill worker and milkman before joining a police detachment. In 1940, following the outbreak of war, he handled cows and pigs at Grafeneck Euthanasia Centre in the course of Action T4, and in 1941 was transferred to Hadamar gassing facility near Limburg, where he worked in the food garden until early summer 1942. In June–July 1942 Mentz was posted to Treblinka extermination camp and served there until November 1943. He worked at Lazaret killing station at Treblinka II Vernichtungslager and later, at Camp I Arbeitslager as an overseer of the agricultural prisoner-commando (German: Landwirtschaftskommando).[3]

Treblinka II Totenlager operated officially between 23 July 1942 and 19 October 1943 marking the most deadly phase of the Final Solution.[4] During this time, more than 800,000 Jews; men, women, and children died in its gas chambers.[5][6] Other estimates of the number killed at Treblinka exceed 1,000,000.[7][8]

The Gunman of Treblinka

At Treblinka, Mentz was subordinate to SS-Unterscharführer August Miete.[9] Upon his arrival there, he was tasked by Sturmbannführer Christian Wirth with supervising the hands-on killing of Jews at the so-called Lazaret, a fake infirmary, surrounded by the barbed wire fence where the sick, old, wounded and "difficult" new arrivals were taken directly from the Holocaust trains.[1]

The Lazaret killing station was dressed with the Red Cross flag. Mentz wore an easily recognizable white doctor's smock for deceit. His fresh new victims were taken behind the barracks to the edge of an open excavation seven metres deep, where the corpses of prisoners were smouldering.[1] They were executed while facing the inferno. Mentz shot thousands of Jews through the back of the neck and pushed their bodies into the flames. He was known as "Frankenstein" to the prisoners, one of the most-feared overseers among the work-brigades. According to one source: "The only thing that is certain is that the number of Jews from the transports he killed single-handedly runs into thousands".[3] In December 1943 Mentz was sent for a short time to Sobibor extermination camp.[3]

After Sobibor Mentz served in Italy during Aktion R (known as the SS Task Force R), i.e. the killing of Jews and partisans there. After 1945 he went back to working as a master milkman in West Germany. He was arrested and charged with complicity in the mass murder of 700,000 Jews during the first of the Treblinka Trials in 1965. He was sentenced to life imprisonment there.[3] On 31 March 1978 he was released from prison due to poor health and died on 25 June 1978 in Niedermeien.[10]


  1. 1.0 1.1 1.2 Kopówka, Edward; Rytel-Andrianik, Paweł (2011) (in Polish) (PDF file, direct download 20.2 MB). Treblinka II – Obóz zagłady [Monograph, chpt. 3: Treblinka II Death Camp]. Drohiczyńskie Towarzystwo Naukowe [The Drohiczyn Scientific Society]. ISBN 978-83-7257-496-1. Retrieved 9 September 2013. "with list of Catholic rescuers of Jews imprisoned at Treblinka, selected testimonies, bibliography, alphabetical indexes, photographs, English language summaries, and forewords by Holocaust scholars." 
  2. Arad, Yitzhak (1987) (Google Books preview). Belzec, Sobibor, Treblinka. The Operation Reinhard Death Camps. Bloomington, Indianapolis: Indiana University Press. ISBN 0253213053.,+Yitzhak+(1987).+Belzec,+Sobibor,+Treblinka. 
  3. 3.0 3.1 3.2 3.3 ARC (23 September 2006). "The Treblinka Perpetrators". An overview of the German and Austrian SS and Police Staff. Aktion Reinhard Camps ARC. Retrieved 22 October 2013. "Sources: Arad, Donat, Glazar, Klee, Sereny, Willenberg et al." 
  4. Treblinka Death Camp Day-by-Day Holocaust Education & Archive Research Team, H.E.A.R.T. Retrieved 11 August 2013.
  5. Staff writer (4 February 2010). "The number of victims". Extermination Camp. Muzeum Treblinka. Retrieved 25 August 2013. 
  6. Niewyk, Donald L.; Nicosia, Francis R. (2000). The Columbia Guide to the Holocaust. Columbia University Press. p. 210. ISBN 0-231-11200-9. 
  7. Donat, Alexander, ed. The Death Camp Treblinka: A Documentary. New York: Holocaust Library, 1979. LOC 79-53471
  8. Franciszek Ząbecki, Wspomnienia dawne i nowe, PAX Association Publishing, Warsaw 1977. (Polish)
  9. Richard Glazar (1995) (Google Books preview). Trap with a Green Fence: Survival in Treblinka. Northwestern University Press. p. 47. ISBN 0810111691. 
  10. Samuel Willenberg (1991) (Google Books). Bunt w Treblince (Revolt in Treblinka). Biblioteka "Więzi" Volume 163, Warsaw: Res Publica. p. 218. ISBN 8370461921. 

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