Medicalized Selection and Extermination at Auschwitz

Medicalized Selection and Extermination at Auschwitz names a system in which medical authority served both the sorting of deportees and experiments conducted on prisoners. In Josef Mengele’s practice, clinical work and decisions about life and death were not separate domains: he represented both as duties to German science and the biological community, while survivors’ testimony records the violence concealed by that professional language.

Selection as Medical Authority

At the Judenrampe, Mengele took part in the selection of deportees arriving at Auschwitz concentration camp. Miklós Nyiszli, a Jewish doctor forced to work for him, described four to five trainloads of deported Hungarians arriving each day. Mengele’s arm directed people one way or the other; whole trainloads were sent to the gas chambers or to be killed by other means. Nyiszli’s account presents selection not as an incidental administrative task but as a repeated exercise of personal authority, conducted under the appearance of a physician’s professional duty.

Mengele later recast this work as an effort to preserve a population and allocate labor. When questioned by his son Rolf about Auschwitz, he claimed that he had tried to designate as many people as possible as fit to work and thereby save the maximum number of lives. He compared selection to decisions in a military hospital, where, in his account, not every wounded person could be treated. The analogy made the camp’s system sound like unavoidable triage. It obscured the fact that Mengele was not simply treating patients under scarcity: he participated in a system that deliberately sent people to their deaths.

His defense also depended on presenting deportees as a biological threat rather than as individuals. In conversation with Rolf, Mengele compared Jews to disease-carrying insects and described their elimination through the language of contamination and purification. This was not a neutral medical classification. It was antisemitic ideology recast as biological necessity, a vocabulary that denied its targets’ humanity while making violence sound like a form of public protection.

Experiments and the Research Chain

The experimental barracks extended this medical authority beyond selection. Nyiszli described tests imposed on twins and people with dwarfism, including blood tests, spinal procedures, and transfusions between twins. The prisoners did not participate as consenting patients: they were subjected to painful and exhausting procedures, and Mengele’s research treated their bodies as material for investigation. In one account, the twins were required to die together so that their conditions could be evaluated simultaneously. The stated scientific purpose thus did not protect them; it made their deaths part of the experimental design.

The work also connected the camp to an academic research institution. After prisoners had been killed, organs were sent to the Kaiser Wilhelm Institute for Anthropology, Human Heredity and Eugenics in Dahlem, Berlin, whose director was Otmar von Verschuer. The parcels were marked as urgent and important war material to ensure prompt delivery. This chain—from captive subject, through Mengele’s examinations, to material sent to a research institute—shows how the language and logistics of science could extend beyond the camp without making the experiments ethical or voluntary.

Nyiszli’s account also records Mengele’s attention to the handling of research records. In the dissection room, Mengele objected to a grease stain on a dossier cover and reproached Nyiszli for carelessness with the files he had collected. The contrast is stark: meticulous concern for the appearance of a case record existed alongside experiments that denied the people represented in those records control over their own lives. Scientific orderliness, in this setting, was not evidence of humane practice.

Medicine within the Camp System

The same medical vocabulary operated alongside the camp’s capacity for mass killing. When scarlet fever broke out in barracks occupied by Hungarian Jews, Mengele arranged for the residents of all three barracks to be taken to the crematorium. The episode shows that the medical framing of camp decisions did not mean that illness led to care. A disease outbreak could instead become the occasion for the removal and killing of a whole group of prisoners.

Nyiszli’s testimony places Mengele’s research within the daily setting of the crematoria and laboratory. Even in autumn 1944, when Germany had already lost the war, Mengele continued to spend long periods examining material and reviewing the accumulated twin dossiers. Nyiszli described him returning after selections and directing further examinations. The persistence of this work, as recorded by a prisoner compelled to assist it, challenges any account of the experiments as detached research or an isolated wartime emergency. The scientific project continued amid the machinery of mass death, and its routines depended on prisoners deprived of the freedom to refuse.

In 1964, Mengele received word that the universities of Frankfurt and Munich had withdrawn his doctoral degrees in medicine and anthropology. The decision was tied to his violation of the Hippocratic Oath and the murders committed at Auschwitz. He experienced the loss as an attack on his identity and professional standing, regarding his qualifications and research as sources of pride. The revocation made explicit a judgment his own defense rejected: scientific credentials could not be separated from the crimes carried out in their name.

Self-Justification and Survivor Testimony

When Rolf asked what he had done at Auschwitz, Mengele defended his conduct as military duty in the name of German science. He claimed that he had obeyed orders, had not created the camp or its killing facilities, and was only one cog in a larger system. He further argued that he could not be held responsible for excesses. These explanations shifted attention away from his choices and toward the institutions and ideology around him, even as his account acknowledged his direct role in selection and experiments.

Rolf’s questions pressed beyond that defense. He asked whether his father had felt compassion for the women, children, and older people sent to die, and whether he had killed or tortured prisoners. Mengele denied wrongdoing and insisted that the individual did not count beside the supposed future of the Aryan community. After two days and two nights of discussion, Rolf concluded that his father was unrepentant and left earlier than planned. The encounter reveals the persistence of Mengele’s justification, not an admission of guilt or a change of belief.

Survivors’ testimony offered a different account of what medicalized selection had meant. At a mock trial held at Yad Vashem in Jerusalem in February 1985, former prisoners testified about experiments on twins and the treatment of newborns and their mothers. Their statements were broadcast internationally. The contrast between these testimonies and Mengele’s descriptions of scientific duty is central to the concept: professional language presented killing and coercion as rational work, while those subjected to it testified to the human consequences. Read together, the records show that medicalized selection was not medicine corrupted only in its vocabulary. It was a system in which medical authority organized persecution, experimentation, and death, and in which claims of science and duty served to defend actions survivors remembered as crimes.