Friedrich Mennecke, a Euthanasia Program physician who was responsible for sending many patients to be gassed. He was sentenced to death in 1946. Germany, date uncertain.
Item View![Personnel of T4, the agency created to administer the Nazi Euthanasia Program. [LCID: 01783]](https://encyclopedia.ushmm.org/images/large/b2be51c5-45cf-4b02-81c7-d66a17ce63f8.jpg "Personnel of T4, the agency created to administer the Nazi Euthanasia Program. [LCID: 01783]")
Personnel of T4, the agency created to administer the Nazi Euthanasia Program. Pictured from left to right are: Erich Bauer (chauffeur), Dr. Rudolf Lonauer, Dr. Victor Ratka, Dr. Friedrich Mennecke, Dr. Paul Nitsche, and Dr. Gerhard Wischer. Berlin, Germany, 1939–45.
Item View![Head nurse of the children's ward at the Kaufbeuren-Irsee euthanasia facility. [LCID: 65379]](https://encyclopedia.ushmm.org/images/large/f570895b-d4c3-4234-b2a2-4a92e4361a8c.jpg "Head nurse of the children's ward at the Kaufbeuren-Irsee euthanasia facility. [LCID: 65379]")
Head nurse of the children's ward at the Kaufbeuren-Irsee “euthanasia” facility. Kaufbeuren, Germany, 1945.
Item View![SS chief Heinrich Himmler (front row, left) and Mauthausen commandant Franz Ziereis (second from left) inspect the Mauthausen concentration ... [LCID: 83476]](https://encyclopedia.ushmm.org/images/large/9276e97e-020d-4a6c-beca-6e556ae12e92.jpg "SS chief Heinrich Himmler (front row, left) and Mauthausen commandant Franz Ziereis (second from left) inspect the Mauthausen concentration ... [LCID: 83476]")
SS chief Heinrich Himmler (front row, left) and Mauthausen commandant Franz Ziereis (second from left) inspect the Wiener Graben quarry during an official tour of the Mauthausen concentration camp. Austria, April 27, 1941.
Item View![Young German soldiers assist in the deportation of Jews from the Zychlin ghetto to the Chelmno camp. [LCID: 18876]](https://encyclopedia.ushmm.org/images/large/c2088b68-613c-4fce-8705-01d9761c6e60.jpeg "Young German soldiers assist in the deportation of Jews from the Zychlin ghetto to the Chelmno camp. [LCID: 18876]")
Young German policemen assist in the roundup and deportation of Jews from the Żychlin ghetto in German-occupied Poland. Jews from Żychlin were transported to the Chełmno killing center, where they were murdered in gas vans. This brutal roundup took place on Jewish holiday of Purim. Poland, March 3, 1942.
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Nazi physician Carl Clauberg, who performed medical experiments on prisoners in Block 10 of the Auschwitz camp. Place and date uncertain.
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Josef Mengele, German physician and SS captain. He was the most prominent of a group of Nazi doctors who conducted medical experiments that often caused great harm or death to the prisoners. In November 1943 Mengele became "Chief Camp Physician" of Auschwitz II (Birkenau). Many of those subjected to Mengele's experiments died as a result or were murdered in order to facilitate post-mortem examination.
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Adolf Eichmann, SS official in charge of deporting European Jewry. Germany, 1940.
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Reinhard Heydrich, chief of the SD (Security Service) and Nazi governor of Bohemia and Moravia. Place uncertain, 1942.
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Nazi physician Karl Brandt, director of the Euthanasia Program. August 27, 1942.
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![Franz Stangl, commandant of the Treblinka killing center. [LCID: 12234]](https://encyclopedia.ushmm.org/images/large/5eec9922-c0c4-408b-b35f-f57675ff2a1e.jpeg "Franz Stangl, commandant of the Treblinka killing center. [LCID: 12234]")