The biblical term shoah (Hebrew: שׁוֹאָה), meaning "destruction", became the standard Hebrew term for the murder of the European Jews, first used in a pamphlet in 1940, Sho'at Yehudei Polin ("Sho'ah of Polish Jews"), published by the United Aid Committee for the Jews in Poland.[11] On 3 October 1941 the cover of the magazine The American Hebrew used the phrase "before the Holocaust", apparently to refer to the situation in France,[12] and in May 1943 The New York Times, discussing the Bermuda Conference, referred to the "hundreds of thousands of European Jews still surviving the Nazi Holocaust".[13] In 1968 the Library of Congress created a new category, "Holocaust, Jewish (1939–1945)".[14] The term was popularized in the United States by the NBC mini-series Holocaust (1978), about a fictional family of German Jews,[15] and in November 1978 the President's Commission on the Holocaust was established.[16] As non-Jewish groups began to include themselves as Holocaust victims too, many Jews chose to use the terms Shoah or Churban instead.[12][g] The Nazis used the phrase "Final Solution to the Jewish Question" (German: die Endlösung der Judenfrage).[18]

Hitler's first step was to take the Jews civil rights away. then he branded and labeled them as if they were cattle. Then he sent them to death and labor camps. If they were they were sent to ghettos. in 1941 most of the Jewish population in Germany would be sent to camps. Nazis racial policies took over everything to try and find a solution for the Jewish question. the Nazis tried to separate them and force migration but when this did not work they found a final solution to the Jewish question. This was the murdering of the Jews in Europe. No-one knows when this decision was made but when the ghettos were built Heydrich said '' this is one step closer to the final aim''.    

In September 1939, the German army occupied the western half of Poland. German police soon forced tens of thousands of Polish Jews from their homes and into ghettoes, giving their confiscated properties to ethnic Germans (non-Jews outside Germany who identified as German), Germans from the Reich or Polish gentiles. Surrounded by high walls and barbed wire, the Jewish ghettoes in Poland functioned like captive city-states, governed by Jewish Councils. In addition to widespread unemployment, poverty and hunger, overpopulation made the ghettoes breeding grounds for disease such as typhus.
Likewise at Auschwitz Dr. Herta Oberhauser killed children with oil and evipan injections, removed their limbs and vital organs, rubbed ground glass and sawdust into wounds. She drew a twenty-year sentence as a war criminal, but was released in 1952 and became a family doctor at Stocksee in Germany. Her license to practice medicine was revoked in 1960. (Laska)

Entering conquered Soviet territories alongside the Wehrmacht (the German armed forces) were 3,000 men of the Einsatzgruppen (“Deployment Groups”), special mobile killing units. Their task was to murder Jews, Soviet commissars, and Roma in the areas conquered by the army. Alone or with the help of local police, native anti-Semitic populations, and accompanying Axis troops, the Einsatzgruppen would enter a town, round up their victims, herd them to the outskirts of the town, and shoot them. They killed Jews in family units. Just outside Kiev, Ukraine, in the ravine of Babi Yar, an Einsatzgruppe killed 33,771 Jews on September 28–29, 1941. In the Rumbula Forest outside the ghetto in Riga, Latvia, 25,000–28,000 Jews were shot on November 30 and December 8–9. Beginning in the summer of 1941, Einsatzgruppen murdered more than 70,000 Jews at Ponary, outside Vilna (now Vilnius) in Lithuania. They slaughtered 9,000 Jews, half of them children, at the Ninth Fort, adjacent to Kovno (now Kaunas), Lithuania, on October 28.
Mengele assembled hundreds of pairs of twins and sometimes spent hours measuring various parts of their bodies and taking careful notes. He often injected one twin with mysterious substances and monitored the illness that ensued. He applied painful clamps to children’s limbs to induce gangrene, injected dye into their eyes – which were then shipped back to a pathology lab in Germany – and gave them spinal taps.
In Nazi-occupied Holland in World War II, shopkeeper Kraler hides two Jewish families in his attic. Young Anne Frank keeps a diary of everyday life for the Franks and the Van Daans, chronicling the Nazi threat as well as family dynamics. A romance with Peter Van Daan causes jealousy between Anne and her sister, Margot. Otto Frank returns to the attic many years after the eventual capture of both families and finds his late daughter's diary. Written by Jwelch5742
The Theresienstadt ghetto was established by the Nazis in an 18th century fortress in Czechoslovakia on November 24, 1941. More than 150,000 Jews passed through the ghetto during its four-year existence, which was used as a holding area for eventual murder in Auschwitz. By 1943, rumors began circulating in the international community that the Nazis were exterminating Jews in gas chambers, and that the conditions of the ghettos did not permit survival. The Nazis rebuilt parts of this ghetto to serve as a “showpiece” for propaganda purposes. Flower gardens were planted in the ghetto. Shops, schools, and a cafe were built. When an investigating commission of the International Red Cross came to visit, they did not see a typical ghetto. In July 1944 the Nazis made a documentary propaganda film about life in this ghetto. After the movie was completed, most of the Jewish “actors” were shipped to their death at Auschwitz.
British troops guard Alex Pickowski, Camp Commandant of Dechau concentration camp  © The discovery of Belsen brought home the shocking truth about Nazi atrocities, but the facts had been known for some time. As early as the summer of 1941, British signals intelligence had intercepted and decoded radio messages from German police units co-operating with the Einsatzgruppen, and details of the killings of Jews were included in the monthly summaries that were sent to Churchill. Churchill responded with a speech on August 24 1941 in which he called the massacres 'a crime without a name' but erroneously identified the victims as 'Russian patriots defending their native soil'. Otherwise, these facts were not made public.
First, the rescuer must have been actively involved in saving Jews from the threat of death or deportation to concentration camps or killing centers. Second, the rescuer must have risked their own life or liberty in their attempt to save Jews. Third, the original motive for rescue must have been to protect and save Jews from the Holocaust. Other motivations, not considered for qualification, include financial gain, protecting Jews in order to convert them to Christianity, taking a Jewish child with the intention of adoption, or rescuing individuals during resistance activities that were not explicitly geared towards rescuing Jews. Finally, there must be first-hand testimony from those rescued to verify the individual's role in the rescue. If testimony does not exist or cannot be found, there must be irrefutable documentation of the individual's participation in the rescue and the conditions surrounding it.
Three SS officers socialize at Auschwitz in 1944. From left to right: Richard Baer (commandant), Dr. Josef Mengele and Rudolf Höss (former commandant). Baer escaped but was captured in 1960; he died in 1963 while awaiting trial. Höss was executed for his crimes in 1947, shortly after receiving the sacrament of penance and Holy Communion as Viaticum. Mengele died while swimming at a seaside resort in 1979, after having lived to see his work at Auschwitz vindicated by the legalization of abortion in the U.S. and elsewhere. (Karl-Friedrich Höcker, public domain, via Yad Vashem and Wikimedia Commons)
It isn’t the first time new material by Frank has been uncovered. In 1998, five additional pages were released—pages that dealt with what Anne saw as the strained and false relationship between her parents. The inclusion of the pages in a biography of Frank sparked acopyright furor, and they were only released in a new critical edition of the book in 2001.

In 1933, Jews in Germany numbered around 525,000, or only 1 percent of the total German population. During the next six years, Nazis undertook an “Aryanization” of Germany, dismissing non-Aryans from civil service, liquidating Jewish-owned businesses and stripping Jewish lawyers and doctors of their clients. Under the Nuremberg Laws of 1935, anyone with three or four Jewish grandparents was considered a Jew, while those with two Jewish grandparents were designated Mischlinge (half-breeds).

In August 1944, they were discovered and deported to Nazi concentration camps. They were long thought to have been betrayed, although there are indications that their discovery may have been accidental, that the police raid had actually targeted "ration fraud".[14] Of the eight people, only Otto Frank, the oldest, survived the war. Anne died when she was 15 years old in Bergen-Belsen, from typhus. The exact date of her death is unknown, and has long been believed to be in early March, a few weeks before the prisoners were liberated by British troops in April 1945. However, research in 2015 indicated that Anne may have died in February.[15]

Mengele's health had been steadily deteriorating since 1972. He suffered a stroke in 1976,[99] and he also had high blood pressure and an ear infection that affected his balance. On 7 February 1979, while visiting his friends Wolfram and Liselotte Bossert in the coastal resort of Bertioga, he suffered another stroke while swimming and drowned.[100] Mengele was buried in Embu das Artes under the name "Wolfgang Gerhard", whose identification he had been using since 1971.[101]

"Righteous Gentiles of the Holocaust by David P. Gushee is an authoritative and indispensable exploration of a highly important aspect of the Holocaust, the willingness of a small, but morally significant, number of non-Jews to take on great risks for themselves and their families to rescue Jews from the Nazi death machine. In this well-documented, well-written book, Gushee explores the full range of Gentile responses to the plight of the Jews from overt hostility and obscene brutality to altruistic rescue, the better to understand the achievements of truly Righteous Gentiles. Highly recommended for anyone interested in the Holocaust."―Richard L. Rubenstein, President Emeritus, Distinguished Professor of Religion, University of Bridgeport
Mengele's name was mentioned several times during the Nuremberg trials in the mid-1940s, but the Allied forces believed that he was probably already dead.[79] Irene Mengele and the family in Günzburg also alleged that he had died.[80] Working in West Germany, Nazi hunters Simon Wiesenthal and Hermann Langbein collected information from witnesses about Mengele's wartime activities. In a search of the public records, Langbein discovered Mengele's divorce papers, which listed an address in Buenos Aires. He and Wiesenthal pressured the West German authorities into starting extradition proceedings, and an arrest warrant was drawn up on 5 June 1959.[81][82] Argentina initially refused the extradition request because the fugitive was no longer living at the address given on the documents; by the time extradition was approved on 30 June, Mengele had already fled to Paraguay and was living on a farm near the Argentine border.[83]

The St. Louis arrived in Havana harbor on May 27th. Of the 937 passengers on board, only 28 passengers were allowed into Cuba. 22 of these passengers were Jewish and had valid U.S. visas, 4 were Spanish citizens and 2 were Cuban nationals, all with valid documents. This story gained a lot of publicity; it was spread throughout Europe and the United States. The U.S. newspapers reported the story compassionately, but only a handful suggested that the refugees should come to the United States. The United States government decided not to take the steps to permit the passengers into the country.
When France fell to Nazi Germany, the mission to resist the Nazis became increasingly important. Following the establishment of the Vichy France regime during the occupation, Trocmé and his church members helped their town develop ways of resisting the dominant evil they faced. Together they established first one, and then a number of "safe houses" where Jewish and other refugees seeking to escape the Nazis could hide. Many refugees were helped to escape to Switzerland following an underground railroad network. Between 1940 and 1944 when World War II ended in Europe, it is estimated that about 3500 Jewish refugees including many children were saved by the small village of Le Chambon and the communities on the surrounding plateau because the people refused to give in to what they considered to be the illegitimate legal, military, and police power of the Nazis.
Doubleday, meanwhile, sensing complications ahead, had withdrawn as Frank’s theatrical agent, finding Levin’s presence—injected by Frank—too intrusive, too maverick, too independent and entrepreneurial: fixed, they believed, only on his own interest, which was to stick to his insistence on the superiority of his work over all potential contenders. Frank, too, had begun—kindly, politely, and with tireless assurances of his gratitude to Levin—to move closer to Doubleday’s cooler views, especially as urged by Barbara Zimmerman. She was twenty-four years old, the age Anne would have been, very intelligent and attentive. Adoring letters flowed back and forth between them, Frank addressing her as “little Barbara” and “dearest little one.” On one occasion he gave her an antique gold pin. About Levin, Zimmerman finally concluded that he was “impossible to deal with in any terms, officially, legally, morally, personally”—a “compulsive neurotic . . . destroying both himself and Anne’s play.” (There was, of course, no such entity as “Anne’s play.”)

According to U.S. Holocaust Memorial Museum full statistics for the tragic fate of children who died during the Holocaust will never be known. Some estimates range as high as 1.5 million murdered children. This figure includes more than 1.2 million Jewish children, tens of thousands of Gypsy children and thousands of institutionalized handicapped children who were murdered under Nazi rule in Germany and occupied Europe.
After the September 1939 German invasion of Poland (the beginning of World War II), anti-Jewish policy escalated to the imprisonment and eventual murder of European Jewry. The Nazis first established ghettos (enclosed areas designed to isolate and control the Jews) in the Generalgouvernement (a territory in central and eastern Poland overseen by a German civilian government) and the Warthegau (an area of western Poland annexed to Germany). Polish and western European Jews were deported to these ghettos where they lived in overcrowded and unsanitary conditions with inadequate food.
For Levin, the source and first cause of these excisions was Lillian Hellman. Hellman, he believed, had “supervised” the Hacketts, and Hellman was fundamentally political and inflexibly doctrinaire. Her outlook lay at the root of a conspiracy. She was an impenitent Stalinist; she followed, he said, the Soviet line. Like the Soviets, she was anti-Zionist. And, just as the Soviets had obliterated Jewish particularity at Babi Yar, the ravine where thousands of Jews, shot by the Germans, lay unnamed and effaced in their deaths, so Hellman had directed the Hacketts to blur the identity of the characters in the play.
^ After the invasion of Poland, the Germans planned to set up a Jewish reservation in southeast Poland around the transit camp in Nisko, but the "Nisko Plan" failed, in part because it was opposed by Hans Frank, the new Governor-General of the General Government territory.[147][148][149] Adolf Eichmann was assigned to remove Jews from Germany, Austria, and the Protectorate of Bohemia and Moravia to the reservation.[150] Although the idea was to remove 80,000 Jews, Eichmann had managed to send only 4,700 by March 1940, and the plan was abandoned in April.[151] By mid-October the idea of a Jewish reservation had been revived by Heinrich Himmler, because of the influx of Germanic settlers into the Warthegau.[152] Resettlement continued until January 1941 under Odilo Globocnik,[153] and included both Jews and Poles.[154] By that time 95,000 Jews were already concentrated in the area,[155] but the plan to deport up to 600,000 additional Jews to the Lublin reservation failed for logistical and political reasons.[156]

While Jews began to flee abroad from the first days of the Nazi regime, only after Kristallnacht in November 1938 did Nazi policy switch categorically to the expulsion of all Jews from the Reich as its central aim. Although the Jews were ever-more intensively disemployed, defined as noncitizens, ostracized, stripped of wealth, brutalized, and encouraged to emigrate, they were not being killed by the government, and the majority of Germany’s five hundred thousand Jews managed to escape from the country before the outbreak of the war (though not necessarily to safety, as many wound up trapped in Poland and the Soviet Union). Indeed, so effective were the Nazis at expelling the Jews from their territories that about two-thirds of Austria’s two hundred thousand Jews managed to flee abroad in the short period between the German takeover of Austria in March 1938 and the closing of the borders to further Jewish emigration from the Reich in 1940-1941.
Several scholars have suggested that the Final Solution began in the newly formed district of Bezirk Bialystok.[48] The German army took over Białystok within days. On Friday, 27 June 1941, the Reserve Police Battalion 309 arrived in the city and set the Great Synagogue on fire with hundreds of Jewish men locked inside.[49] The burning of the synagogue was followed by a frenzy of killings both inside the homes around the Jewish neighbourhood of Chanajki, and in the city park, lasting until night time.[50] The next day, some 30 wagons of dead bodies were taken to mass graves. As noted by Browning, the killings were led by a commander "who correctly intuited and anticipated the wishes of his Führer" without direct orders.[49] For reasons unknown, the number of victims in the official report by Major Weis was cut in half.[50] The next mass shooting of Polish Jews within the newly formed Reichskommissariat Ostland took place in two days of 5–7 August in occupied Pińsk, where over 12,000 Jews died at the hands of Waffen SS,[51] not the Einsatzgruppen.[41] An additional 17,000 Jews perished there in a ghetto uprising crushed a year later with the aid of Belarusian Auxiliary Police.[52]

For the first time, it’s possible to say why the Mossad failed to apprehend the man who was perhaps the most wanted Nazi to survive World War II. Documents and interviews reveal that contrary to popular belief, for most of the time that Mengele was in hiding, the Mossad wasn’t looking for him at all — or placed finding him far down its to-do list. My new research sheds light on a time when realism and maturity shaped the agency’s priorities, rather than an understandable desire to spill Nazi blood.
“I’ve offered three possibilities” to the museum, Freund said. The first was to try to partially excavate one section of the tunnel and protect it with climate-controlling plexiglass walls. Alternatively, a re-creation could be built, as had been done with the recently finished facsimile of King Tutankhamun’s tomb, in the Valley of the Kings, in Egypt. The last option, Freund allowed, was a “little futuristic”: Relying on the data from the scans, a 3-D film could be created so visitors could relive the experience of the escape.
On 15 September 1935, the Reichstag passed the Reich Citizenship Law and the Law for the Protection of German Blood and German Honor, known as the Nuremberg Laws. The former said that only those of "German or kindred blood" could be citizens. Anyone with three or more Jewish grandparents was classified as a Jew.[107] The second law said: "Marriages between Jews and subjects of the state of German or related blood are forbidden." Sexual relationships between them were also criminalized; Jews were not allowed to employ German women under the age of 45 in their homes.[108] The laws referred to Jews but applied equally to the Roma and black Germans.[107]
Before and after the March 1933 Reichstag elections, the Nazis intensified their campaign of violence against opponents.[77] They set up concentration camps for extrajudicial imprisonment.[78] One of the first, at Dachau, opened on 9 March 1933.[79] Initially the camp contained mostly Communists and Social Democrats.[80] Other early prisons were consolidated by mid-1934 into purpose-built camps outside the cities, run exclusively by the SS.[81] The initial purpose of the camps was to serve as a deterrent by terrorizing Germans who did not conform.[82]
After the June 1941 German invasion of the Soviet Union, SS and police units (acting as mobile killing units) began massive killing operations aimed at entire Jewish communities. By autumn 1941, the SS and police introduced mobile gas vans. These paneled trucks had exhaust pipes reconfigured to pump poisonous carbon monoxide gas into sealed spaces, killing those locked within. They were designed to complement ongoing shooting operations.
Anne also wrote short stories, fairy tales, and essays. In her diary, she reflected on her "pen children," as she called her writings. On September 2, 1943, she began to meticulously copy them into a notebook and added a table of contents so that it would resemble a published book. She gave it the title "Stories and Events from the Annex." Occasionally she read a story to the inhabitants of the annex, and she wrote about her intention to send one of her fairy tales to a Dutch magazine. Increasingly, she expressed her desire to be an author or journalist.
Usage Note: Holocaust has a secure place in the language when it refers to the massive destruction of humans by other humans. In our 1987 survey 99 percent of the Usage Panel accepted the use of holocaust in the phrase nuclear holocaust. Sixty percent accepted the sentence As many as two million people may have died in the holocaust that followed the Khmer Rouge takeover in Cambodia. But because of its associations with genocide, people may object to extended applications of holocaust. The percentage of the Panel's acceptance drops sharply when people use the word to refer to death brought about by natural causes. In our 1999 survey 47 percent approved the sentence In East Africa five years of drought have brought about a holocaust in which millions have died. Just 16 percent approved The press gives little coverage to the holocaust of malaria that goes on, year after year, in tropical countries, where there is no mention of widespread mortality. The Panel has little enthusiasm for more figurative usages of holocaust. In 1999, only 7 percent accepted Numerous small investors lost their stakes in the holocaust that followed the precipitous drop in stocks. This suggests that these extended uses of the word may be viewed as overblown or in poor taste.
The mass killings of Jews in the occupied Soviet territories were assigned to four SS formations called Einsatzgruppen ("task groups"), which were under Heydrich's overall command. Similar formations had been used to a limited extent in Poland in 1939, but the ones operating in the Soviet territories were much larger.[242] The Einsatzgruppen's commanders were ordinary citizens: the great majority were professionals and most were intellectuals.[243] By the winter of 1941–1942, the four Einsatzgruppen and their helpers had killed almost 500,000 people.[244] The largest massacre of Jews by the mobile killing squads in the Soviet Union was at a ravine called Babi Yar outside Kiev,[245] where 33,771 Jews were killed in a single operation on 29–30 September 1941.[246][n] A mixture of SS and Security Police, assisted by Ukrainian police, carried out the killings.[248] Although they did not actively participate in the killings, men of the German 6th Army helped round up the Jews of Kiev and transport them to be shot.[249] By the end of the war, around two million are thought to have been victims of the Einsatzgruppen and their helpers in the local population and the German Army. Of those, about 1.3 million were Jews and up to a quarter of a million Roma.[250]
Every day, twins were selected for experimentation. He would require that they give blood and sometimes so much was drawn that a twin would faint. Some underwent huge blood transfusions from one twin to the other. In an attempt to change their eye color, he painfully injected chemicals into their eyes, only to result in infection. One night he collected 7 sets of twins with different colored eyes, killed them, dissected them, and then sent the eyes to von Verschuer for analysis. Twins as young as 5 were killed from experiments, then their bodies dissected. For one pair of twins, he attempted to create conjoined twins by sewing their backs together and trying to connect blood vessels and organs. A few days after the extremely painful process, the twins developed gangrene and died. Many twins had their limbs and organs removed without the use of an anesthetic. Other experiments included isolation endurance, reactions to various stimuli, spinal taps without anesthesia, the removal of sexual organs, and incestuous impregnations. Out of the 1500 twins experimented on by Mengele, only around 200 survived the horror.
Anne Frank’s final diary entry, written on August 1, 1944, ends introspectively—a meditation on a struggle for moral transcendence set down in a mood of wistful gloom. It speaks of “turning my heart inside out, the bad part on the outside and the good part on the inside,” and of “trying to find a way to become what I’d like to be and what I could be if . . . if only there were no other people in the world.” Those curiously self-subduing ellipses are the diarist’s own; they are more than merely a literary effect—they signify a child’s muffled bleat against confinement, the last whimper of a prisoner in a cage. Her circumscribed world had a population of eleven—the three Dutch protectors who came and went, supplying the necessities of life, and the eight in hiding: the van Daans, their son Peter, Albert Dussel, and the four Franks. Five months earlier, on May 26, 1944, she had railed against the stress of living invisibly—a tension never relieved, she asserted, “not once in the two years we’ve been here. How much longer will this increasingly oppressive, unbearable weight press down on us?” And, several paragraphs on, “What will we do if we’re ever . . . no, I mustn’t write that down. But the question won’t let itself be pushed to the back of my mind today; on the contrary, all the fear I’ve ever felt is looming before me in all its horror. . . . I’ve asked myself again and again whether it wouldn’t have been better if we hadn’t gone into hiding, if we were dead now and didn’t have to go through this misery. . . . Let something happen soon. . . . Nothing can be more crushing than this anxiety. Let the end come, however cruel.” And on April 11, 1944; “We are Jews in chains.”
After Germany’s loss in WWI, the Treaty of Versailles punished Germany by placing tough restrictions on the country. The treaty made Germany take full responsibility for the war, reduced the extent of German territory, severely limited the size and placement of their armed forces, and forced Germany to pay the allied powers reparations. These restrictions not only increased social unrest but, combined with the start of the Great Depression, collapsed the German economy as inflation rose alongside unemployment.
By the spring of 1942, the Nazis had established six killing centers (death camps) in Poland: Chelmno (Kulmhof), Belzec, Sobibor, Treblinka, Maidanek and Auschwitz. All were located near railway lines so that Jews could be easily transported daily. A vast system of camps (called Lagersystem) supported the death camps. The purpose of these camps varied: some were slave labor camps, some transit camps, others concentration camps and their sub­camps, and still others the notorious death camps. Some camps combined all of these functions or a few of them. All the camps were intolerably brutal.

The Nazis frequently used euphemistic language to disguise the true nature of their crimes. They used the term “Final Solution” to refer to their plan to annihilate the Jewish people. It is not known when the leaders of Nazi Germany definitively decided to implement the "Final Solution." The genocide, or mass destruction, of the Jews was the culmination of a decade of increasingly severe discriminatory measures.
Auschwitz, perhaps the most notorious and lethal of the concentration camps, was actually three camps in one: a prison camp (Auschwitz I), an extermination camp (Auschwitz II–Birkenau), and a slave labour camp (Auschwitz III–Buna-Monowitz). Upon arrival, Jewish prisoners faced what was called a Selektion. A German doctor presided over the selection of pregnant women, young children, the elderly, handicapped, sick, and infirm for immediate death in the gas chambers. As necessary, the Germans selected able-bodied prisoners for forced labour in the factories adjacent to Auschwitz, where one German company, IG Farben, invested 700 million Reichsmarks in 1942 alone to take advantage of forced labour, a capital investment. The conglomerate presumed that slave labour would be a permanent part of the German economy. Deprived of adequate food, shelter, clothing, and medical care, these prisoners were literally worked to death. Periodically, they would face another Selektion. The Nazis would transfer those unable to work to the gas chambers of Birkenau.
Mengele became interested in using twins for medical research through his mentor, Verschuer. Verschuer himself was famous for experimenting with identical and fraternal twins in order to trace the genetic origins of various diseases. During the 1930s, twin research was seen as an ideal tool in weighing the factors of human heredity and environment. Mengele and his mentor had performed a number of legitimate research protocols using twins as test subjects throughout the 1930s. Now, at Auschwitz, with full license to maim or kill his subjects, Mengele performed a broad range of agonizing and often lethal experiments with Jewish and Roma (Gypsy) twins, most of them children.