On September 1st, 1967, an aging woman in a Bavarian prison cell made the decision that had been building through nearly two decades of imprisonment. Sixty-year-old Ilse Koch, once known around the world as the Witch of Buchenwald, hanged herself in the women’s prison at Aichach. The date carried a dark irony that did not go unremarked upon in the coverage of her death. It was the twenty-eighth anniversary of Germany’s invasion of Poland, the act that had started the war in which her crimes had been committed.

Nineteen years into a life sentence handed down by a West German court, Ilse Koch had ended her life on her own terms, unrepentant to the last. To understand what became of her family after the war, one first has to understand who Ilse Koch was and how she came to occupy the position of terror she held. She was born Margarete Ilse Köhler on September 22nd, 1906, in Dresden, the daughter of a factory foreman. She grew up in a working-class household and showed no particular signs in her youth of what she would become, working for a time as a bookkeeper and a librarian, professions that suggested quiet domesticity rather than brutality.

But Germany in the late 1920s and early 1930s was anything but quiet, convulsing with economic misery, political radicalism, and the rising tide of National Socialism. Like many Germans of her generation, Ilse was drawn into the orbit of the Nazi Party, joining the NSDAP in 1932, the year before Hitler took power. It was through the party that she met the man who would define the rest of her life: Karl Otto Koch. Karl Koch was a career SS man, ambitious and brutal in equal measure, a product of a system that rewarded cruelty and punished weakness.

He and Ilse married in 1936, a year in which Karl had already established himself as a rising figure within the SS concentration camp system, having served at Esterwegen and Columbia House before being appointed commandant of the newly established Sachsenhausen camp. Their marriage was by all accounts a meeting of shared ideology. Ilse was not a passive wife dragged along by an overbearing husband, but an enthusiastic participant in the world the SS had built. In 1937, Karl Koch was transferred to Buchenwald, a camp that would become one of the most notorious in the entire Nazi system.

Perched on the Ettersberg hill near Weimar, in what had once been the heartland of German classical culture, Buchenwald represented a grotesque inversion of everything Goethe and Schiller had stood for. Under Karl Koch’s command, and with Ilse living on the camp grounds in a villa not far from the prisoner barracks, Buchenwald became a place of systematic terror, forced labor, starvation, and murder. Ilse took to camp life with an enthusiasm that horrified even some of her contemporaries. She rode horses through the camp grounds, reportedly whipping prisoners who did not move out of her way quickly enough.

She was said to point out prisoners with interesting tattoos who would subsequently be killed and their skin preserved. She walked through the camp in tight riding clothes, fully aware of the effect her presence had on starving, terrorized men who were forbidden even to look at her under pain of severe punishment. She became known to prisoners as Die Kommandeuse, the female commandant, a title that carried a very specific kind of dread. Survivors would later testify to her cruelty in vivid and horrifying detail.

Whether or not every specific allegation against her was ultimately proven beyond a legal standard, the culture of sadism and terror that flourished at Buchenwald during her years there was documented extensively by survivors, by the American forces who liberated the camp, and by subsequent investigators. The marriage of Ilse and Karl Koch produced three children while they were active in the camp system. Their first child, a son named Artwin Koch, was born in 1936, the same year as their marriage, a timeline suggesting the relationship had been ongoing for some time before the formal wedding. A second child, a daughter named Gisela Koch, followed in 1937.

A third child, another son, arrived in 1943. These three children grew up in the shadow of Buchenwald, in the villa their parents occupied while thousands of human beings suffered and died beyond the fence line. What they understood about where they lived, what they heard and saw, are questions historians and psychologists have grappled with for decades, and there are no comfortable answers. Children raised inside the SS camp system inhabited a profoundly distorted reality in which cruelty was normalized, in which screaming from the other side of the wire became simple background noise, in which the hierarchy of human worth the Nazi regime had constructed was as natural as the seasons.

Karl Koch’s fate actually came before the war ended, and it represents one of the more darkly ironic chapters in the entire story. Despite commanding a camp where tens of thousands of people died, he was not brought down by his victims or by Allied forces. He was investigated, tried, and convicted by the SS itself. The charges against him were not murder, not cruelty to prisoners, not the systematic terror he had presided over.

The SS did not care about any of that. The charges were corruption and embezzlement. It emerged that Karl Koch had been systematically stealing from the camp, from the property of murdered prisoners, from the SS treasury. He had also been involved in the murder of prisoners who might have been able to testify against him regarding these financial crimes.

The investigation was led by SS Judge Georg Konrad Morgen, a figure who would later claim at Nuremberg that he had been trying to bring the camp system to account, though historians remain divided on how much genuine moral courage was involved rather than institutional self-interest. Regardless, the investigation found sufficient evidence to charge Karl Koch with murder and corruption. He was tried before an SS and police court, found guilty, and on April 5th, 1945, just days before American forces arrived to liberate Buchenwald, he was shot on the grounds of the very camp he had commanded. His wife was already under arrest by that point, having been detained by the Germans themselves in 1944 on similar charges.

When American soldiers rolled into Buchenwald on April 11th, 1945, they found a camp whose commandant was already dead, whose commandant’s wife was already in custody, and whose horrors nonetheless stunned even men who had been prepared for the worst. The liberation of Buchenwald changed everything for Ilse Koch. The evidence American forces found there, the shrunken heads, the tattooed human skin specimens preserved in jars in the pathology department, the testimonies of survivors who poured out their experiences with desperate urgency, all of it transformed Ilse from a regional SS figure into an international symbol of Nazi evil. She was formally arrested by American forces and held for trial.

The first major proceeding against her came in 1947, when she was tried before an American military tribunal at Dachau as part of the Buchenwald trial. Ilse faced charges that included participation in a criminal organization and assault. The specific charges around the human skin allegations were more difficult to prosecute under the evidentiary standards the tribunal applied. Nonetheless, survivor after survivor testified to her cruelty, her contempt, her enthusiastic participation in the degradation and murder of prisoners.

The tribunal found her guilty and sentenced her to life imprisonment. For a brief, astonishing moment, that sentence was commuted. In 1948, General Lucius Clay, the American military governor of Germany, reviewed the convictions from the Dachau trials and reduced a number of sentences. In Ilse Koch’s case, he reduced her life sentence to four years, citing what he described as insufficient evidence to prove that she had personally ordered killings.

The outcry was immediate and enormous. American newspapers ran headlines describing the reduction as an outrage. Senators and congressmen demanded explanations. Senator Joseph McCarthy, then at the beginning of his political career and not yet associated with the anti-communist crusade that would later define his legacy, was among those who made speeches in 1948 attacking the sentence reduction as a miscarriage of justice.

A Senate investigation subcommittee was convened to examine the Dachau trial proceedings; its findings, published in 1949, were critical of certain aspects of the process but did not ultimately result in the restoration of her life sentence, as the West German government was already moving toward its own prosecution. General Clay maintained his position, arguing that the legal standard had to be applied consistently regardless of public sentiment. Ilse Koch was released in 1949, having served approximately three years. The release did not mean freedom in any real sense.

In West Germany there was immediate and sustained pressure to try her again under German law, and in 1950 West German authorities arrested her once more. The new trial, conducted before a West German court in Augsburg, was far more exhaustive than the American military proceeding. It lasted until 1951 and became one of the most significant and deeply disturbing trials in post-war German legal history. The court heard testimony from dozens of survivors of Buchenwald.

Witnesses described her conducting personal inspections that resulted in prisoners being murdered, described her ordering beatings, described the culture of sadistic pleasure she had cultivated in the camp. The question of the human skin artifacts that had dominated American coverage was addressed in careful, legally precise terms. While the existence of such artifacts at the camp was confirmed, the direct personal connection between Ilse Koch and the selection of victims for this purpose was handled carefully under the strict evidentiary rules of a civilian criminal court. What was not in doubt, what was proven by an enormous weight of evidence, was that she had been a direct and enthusiastic participant in the terrorization and murder of prisoners at Buchenwald.

In 1951, the West German court sentenced her to life imprisonment. This time there would be no commutation. But before following Ilse into those proceedings, there is a question the history books often skip over. Where were her children during all of this?

When Ilse Koch was arrested by American forces in 1945, her children were effectively orphaned. Their father had been executed by the SS. Their mother was in Allied custody. Three children, ranging from roughly two years old to nine years old, were left without parents in the ruins of post-war Germany.

The youngest child, born in 1943, has a particularly complicated story. In some accounts, this child was born while Ilse was already under German SS investigation, and the paternity of this child has been disputed. Some historians and contemporary investigators believe the child was not Karl Koch’s, that Ilse had been involved with another man. What is known with confidence is that the children were placed into the care of the German welfare system, that they were separated from their mother for the years of her imprisonment and trials, and that they grew up bearing the most notorious surname in post-war Germany.

Artwin Koch, the eldest, faced the most direct and devastating consequences of his mother’s notoriety. Born in 1936, he was approximately nine years old when his father was executed and his mother arrested. He spent his formative years in the care of institutions and foster families, growing up knowing exactly who his parents were. How could he not?

The name Koch in the context of Buchenwald had become globally synonymous with atrocity. German newspapers covered the trials in detail; American publications reached Germany; the word Buchenwald was spoken in schools and in homes. For a child growing up in this environment, carrying that name, the psychological burden must have been almost unimaginable. Historical accounts of his later life are fragmentary, as he, like so many children of perpetrators, worked hard to disappear from public record.

What is known suggests that he changed his name at some point in his adult life. The children of Himmler, of Bormann, of Göring, of Hess all faced variants of the same problem: a name that preceded them everywhere and poisoned everything it touched. For Artwin Koch, the situation was perhaps even more acute than for many others, because his mother, unlike most Nazi leaders’ wives, had been tried and convicted personally. She was not simply the wife of a criminal.

She was a convicted criminal herself. The stigma was doubled, layered, inescapable. Gisela Koch, born in 1937, faced the same fundamental challenge. She too grew up with the knowledge of what her parents had done.

She too had to navigate a post-war German society that was slowly, painfully, and often dishonestly working through its relationship with the crimes of the Third Reich. What happened to Gisela specifically is even harder to trace than what happened to Artwin, because she too worked hard to establish a private life, and because German privacy law, notably stricter than American law on matters of personal records, has protected what details exist. She was eight years old at liberation, old enough to have formed clear and detailed memories of life at Buchenwald: the villa, the grounds, her parents, perhaps the sounds and smells that accompanied life at the camp. What she saw or understood of the camp’s operations cannot be known.

What can be fairly confidently said is that by the time of liberation she was old enough to have formed memories that would never fully leave her. The youngest legitimate child, born in 1943, has the most obscured fate of all three. The circumstances of the birth, the disputed paternity, the extreme youth at the time of both parents’ legal catastrophes, and the evident effort to maintain anonymity combined to make this the most difficult thread to follow. What can be said is that by the late 1940s, all three Koch children were being raised entirely apart from their mother, bearing names and an identity they had done nothing to earn.

Then, during the period of her second imprisonment, the most extraordinary and deeply troubling development in the entire story occurred. While in American detention in the summer of 1945, awaiting the completion of her trial proceedings, Ilse Koch discovered she was pregnant. She had apparently had contact with a man whose identity has been the subject of much speculation and dispute. In September 1947, she gave birth to a son in American custody.

This son, whose name became Uwe Köhler after he was given his mother’s maiden name, was born into a prison. He was taken from his mother and placed in German welfare care. He grew up not knowing who his mother was. This was the fourth Koch child, the one most invisible in contemporary accounts, the one whose existence represents perhaps the most extreme version of the question of inherited identity and unearned guilt.

Uwe Köhler was raised in an orphanage and later by foster families in post-war West Germany. He did not know the name of his biological mother. He did not know the name of the camp. He did not know that his birth had occurred in a prison.

He built a life, becoming by several accounts a reasonably well-adjusted individual who worked in a skilled trade and maintained a quiet existence in a small town in Bavaria. And then, at some point in his late teens or early twenties, he found out. The details of how he discovered his parentage vary across the different sources that have addressed this case, but the fact that he discovered it is not in dispute. Imagine being a young man who has built an identity in post-war Germany, who has friends and perhaps a girlfriend and plans for the future, and who is then confronted with the information that his mother is Ilse Koch, that the circumstances of his birth were the circumstances of a prison cell.

What happened next in Uwe’s story is documented in a remarkable way, because at some point in the late 1960s, Uwe Köhler visited Ilse Koch in Aichach prison. He met his biological mother. Accounts of this meeting and of the relationship that followed are sparse and sometimes contradictory. What is known is that Ilse Koch was apparently moved by the existence of this son she had effectively never known.

What is certain is that the circumstances of their reunion took place against the backdrop of her deteriorating mental state. By the late 1960s, she had been in prison for the better part of two decades, aging, isolated, and by multiple accounts suffering from significant psychological problems. The knowledge that her children had been taken from her and raised apart from her, combined with the relentless public hatred directed at her, had clearly taken a toll. In one extraordinary documented instance, a West German journalist tracked down Uwe in the late 1960s or early 1970s and attempted to interview him about his mother.

Uwe reportedly refused to speak publicly about her and expressed his wish to be left alone to live his life without reference to his origins. Ilse Koch’s death did not end the story of her family. In many ways it intensified certain aspects of it, because death removed the living focus of public hatred and replaced it with questions that were harder to answer. What did her children owe the world?

What did the world owe them? Were they victims of their parentage, or were they somehow tainted by it? Post-war German society was not particularly comfortable asking these questions, but ask them it did, because the children of perpetrators collectively represented a problem German culture was going to have to grapple with. Artwin Koch navigated his life with what appears to have been a consistent strategy of withdrawal from public attention.

He changed his name, moved to a part of Germany where he was not known, built a career. He may have married and had children of his own, grandchildren of Ilse and Karl Koch who may or may not have been told anything about their grandparents’ history. The fragmentary nature of the available record makes it impossible to say with certainty. What can be said is that Artwin did not, unlike some children of perpetrators, become a public figure or advocate in any capacity related to his family’s history.

He did not follow the path taken by Niklas Frank, the son of Hans Frank, the Nazi governor general of Poland, who spent his adult life publicly condemning his father and engaging with Holocaust memorial and education work. He did not follow the path of Martin Bormann Jr. , who became a Catholic priest and spent his life attempting to atone for his father’s crimes through religious service and public engagement. Artwin Koch’s path, as best it can be determined, was the path of silence and disappearance.

The same was true of the other children. There is no documented record of any public response from any of them to their mother’s death. The silence was complete. What little can be pieced together of Gisela’s story from the fragmentary public record suggests a life of deliberate obscurity.

The German welfare system of the post-war years was not equipped in any psychological or institutional sense to deal with the specific and extraordinary needs of children of convicted war criminals. There were no support groups, no therapeutic framework, no public figures modeling how to carry this kind of identity, no books written for such children about how to understand what their parents had done. They were simply placed in the system and expected to manage. That most of them apparently did manage, that they built functional lives and did not themselves become criminals or public menaces, is remarkable when one considers what they were carrying.

The broader circle connected to Buchenwald faced widely varying fates. Hermann Pister, who had replaced Karl Koch as commandant of the camp in 1942 after Koch’s removal and subsequent investigation by the SS, was tried at the Dachau Buchenwald trial in 1947, the same proceeding in which Ilse received her initial life sentence. He was found guilty and sentenced to death, but died in September 1948 at Landsberg prison before the execution could be carried out, whether from natural causes or a heart attack depending on the account. Waldemar Hoven, the camp physician who had conducted or overseen medical experiments on prisoners and who had also been implicated in the murder of prisoners whose knowledge of corruption within the camp leadership threatened to expose the Koch financial crimes, was tried and convicted at the doctors’ trial at Nuremberg in 1947, sentenced to death, and executed at Landsberg prison in June 1948.

The doctors’ trial itself was a landmark legal proceeding that produced the Nuremberg Code, the set of ethical principles governing human experimentation that became foundational to modern bioethics. Of the thirty-one defendants in the Dachau Buchenwald trial, all were found guilty and twenty-two were sentenced to death, though not all of these sentences were carried out as the American military government moved through its period of review and sentence reduction. Ilse Koch’s commutation was only the most famous and most controversial of these reductions. The broader pattern of post-war justice in West Germany was deeply inconsistent.

The denazification process, which was supposed to assess the degree of individual complicity in the Nazi system, was in practice deeply flawed. Most Germans who went through it emerged with classifications that minimized their involvement. The vast majority of people who had participated in the Nazi system in one way or another, from low-level party members to factory managers who had used slave labor to civil servants who had administered the deportation machinery, emerged from the process with their lives, their livelihoods, and in many cases their social standing largely intact. A 1968 study found that thousands of former Gestapo officials, concentration camp personnel, and members of the Einsatzgruppen killing squads had faced no prosecution whatsoever.

The establishment of the Central Office of the State Justice Administrations for the Investigation of National Socialist Crimes in Ludwigsburg in 1958 represented a more systematic attempt to pursue perpetrators who had evaded earlier proceedings, leading to a series of high-profile trials in the 1960s, including the Ulm Einsatzgruppen trial of 1958 and the Frankfurt Auschwitz trials of 1963 to 1965. The Frankfurt trials, prosecuted by Attorney General Fritz Bauer, a Jewish survivor of Nazi persecution who had returned to Germany specifically to pursue this work, represented a generational watershed. Unlike the Nuremberg trials, which had been conducted by foreign powers and from which many Germans could distance themselves, the Frankfurt trials were conducted by Germans, in German, under German law, with German defendants and German judges. They forced a confrontation with the past that the Allied-run proceedings had not fully achieved.

The survivors of Buchenwald and their families provide the essential counterpoint to the Koch family narrative. Among them was Elie Wiesel, then sixteen years old, who had arrived at Buchenwald after the death march from Auschwitz in which his father died. He survived the final weeks of the camp’s operation and was present when American forces arrived in April. He would go on to write Night, one of the most important literary testimonies to the Holocaust ever produced, and would win the Nobel Peace Prize in 1986.

Jorge Semprún, the Spanish political exile who spent years in the camp, wrote extensively about the experience in works including The Long Voyage and Literature or Life, grappling with the specific moral and psychological complexities of the camp experience with a philosophical sophistication that was unusual in survivor testimony. General Eisenhower himself visited Buchenwald on April 12th, 1945, the day after liberation, and insisted that German civilians from nearby Weimar be brought to the camp to see what had been done in their vicinity. He reportedly said that he wanted the evidence gathered so thoroughly that no one would ever be able to deny that these things had happened. The residents of Weimar, situated just eight kilometers from the camp gates, had heard the trains arriving and smelled the smoke from the crematorium on certain days depending on the wind direction.

The forced proximity between the cultural capital of classical Germany and one of the most murderous installations in the Nazi camp system was not accidental. Heinrich Himmler selected the site in part precisely because of its proximity to Weimar, as a statement about the relationship between the old Germany and the new one National Socialism was building. Karl Koch had reportedly cut down some of the ancient oak trees on the Ettersberg that were traditionally associated with Goethe, who had reportedly written some of his poetry in their shade. This act, cutting down Goethe’s trees to build a concentration camp, was understood at the time and has been understood since as a deliberate and symbolic desecration of German cultural heritage.

The Buchenwald Memorial, established on the grounds of the former camp in the German Democratic Republic in 1958, presented its own version of the camp’s history, foregrounding the political prisoners and the self-liberation narrative while giving less attention to the Jewish victims and the specifically racial dimensions of Nazi ideology. After German reunification, the memorial was expanded to encompass the entire site, including the Soviet special camp that had operated there from 1945 to 1950, which held approximately 28,000 prisoners, of whom roughly 7,000 died, many from starvation and disease. The permanent exhibition as it exists today dedicates significant space to the documentation of the camp’s perpetrators as well as its victims, including extended coverage of Karl and Ilse Koch. Photographs of the Koch family, of the villa they occupied, of the camp under their command, are displayed alongside the testimonies of survivors and the documentation of the crimes that were committed.

In the late 1990s and early 2000s, a team of researchers at the Buchenwald Memorial undertook a systematic examination of the original documentary and forensic evidence related to the alleged human skin artifacts. Their findings confirmed the existence of preserved human skin specimens at the camp but raised questions about the specific narrative of lampshade production that had been central to the Ilse legend. The researchers’ conclusions were nuanced and historically careful, acknowledging both what was proven and what remained uncertain. The Ilse Koch who appears in most popular histories is not quite the historical Ilse Koch.

She is a more mythological figure, a symbol of female evil, a personification of sadism and depravity. This mythologization provided a female villain in a historical drama largely populated by male perpetrators, gave a name and a face to the specific horror of concentration camp sadism, and allowed the public to focus their horror and rage on an individual rather than on the diffuse reality of institutional evil. For her children, growing up in the shadow of this legend, the question of what their mother had actually done versus what was alleged or rumored or sensationally reported was probably deeply confusing and potentially deeply painful. The story of what happened to Ilse Koch’s family after World War II does not have a satisfying ending.

There is no redemption arc, no documented acknowledgement, no public act of contrition or engagement. The story ends instead in the quiet obscurity that the Koch children sought and apparently achieved, in lives lived out of the public eye in a Germany that was itself slowly and imperfectly working through what it had done. It ends with Uwe Köhler somewhere in Bavaria carrying knowledge that most people around him probably did not share. It ends with Artwin Koch, under whatever name he chose to live, building a life that required a constant negotiation with the past he carried.

It ends with Gisela Koch, the daughter who remembered the villa and the grounds and the first years of her life at Buchenwald, finding whatever accommodation she could with the irreversible facts of her childhood. These are human stories that deserve to be acknowledged as such, not to excuse anything, not to diminish the suffering of the victims, but because the capacity to hold both truths simultaneously, to mourn the victims without losing sight of the humanity of those who are only collateral casualties of the perpetrators’ choices, is exactly the kind of moral complexity that an honest engagement with the history of the Holocaust requires. Whatever happened to Ilse Koch, whatever happened to her children, whatever legal proceedings were conducted, and whatever sentences were served, the central and irreducible fact is the suffering of the prisoners, more than 56,000 people who died at Buchenwald. They had names and faces and families and hopes and histories that the camp sought to erase.

The work of the memorial, the work of Holocaust scholarship, the work of survivor testimony projects is to restore some of those names and faces and histories, to insist on the individuality and the humanity of each person who was murdered there. That is the work that continues, and it is the work that matters most.