Browning wrestles with these and many other related questions in a consistently persuasive and cogent way. He concludes, very sensibly, that it is inconceivable that the Holocaust, unprecedented in history and entailing a massive, counterproductive diversion of resources in wartime, could have taken place without Hitler’s immediate knowledge and approval, although his orders were often, as Browning notes, “vague and inexplicit.” Moreover, Hitler himself was the chief Nazi ideologue of rabid, demented, racialist anti-Semitism, with anti-Semitism at the very center of his worldview and in and of itself a central motivating factor in his foreign and military policies.
Just imagine how interesting it would be if I were to publish a romance of the "Secret Annex." The title alone would be enough to make people think it was a detective story. But, seriously, it would be quite funny 10 years after the war if we Jews were to tell how we lived and what we ate and talked about here. Although I tell you a lot, still, even so, you only know very little of our lives.
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]

Browning concludes that Hitler ordered the genocide of the Jews in the Soviet Union during the period of what he terms “euphoria” just after the invasion of Russia, when victory appeared to be easily within Germany’s grasp. Browning dates this, as most recent historians do, to August-October 1941, in the context of a general “war of destruction” in the Soviet Union. Browning’s timetable thus reflects today’s consensus, although he does present a comprehensive array of evidence in support of this conclusion. With the failure of the German armies to gain a decisive victory in Russia, a failure that was becoming evident by October or November 1941, Nazi genocide began to turn toward the Jews under German control throughout Europe, beginning with the Jews of Poland, and employing the assembly-line techniques of the gas chambers in extermination camps like Treblinka and Auschwitz rather than the open-air shootings that the Einsatzgruppen invariably used during the first days of the invasion.
The political situation in Germany and elsewhere in Europe after World War I (1914–1918) contributed to the rise of virulent antisemitism. Many Germans did not accept that their country had been defeated, which gave birth to the stab-in-the-back myth. This insinuated that it was disloyal politicians, chiefly Jews and communists, who had orchestrated Germany's surrender. Inflaming the anti-Jewish sentiment was the apparent over-representation of Jews in the leadership of communist revolutionary governments in Europe, such as Ernst Toller, head of a short-lived revolutionary government in Bavaria. This perception contributed to the canard of Jewish Bolshevism.[65]

While there were only 23 main camps between 1933 to 1945, the Nazi regime established some 20,000 other camps used for forced labor, transit or temporary internment. During the Holocaust it is estimated that 6 million Jews were slaughtered along with, 3 million Soviet prisoners of war, 3 million Polish Catholics, 700,000 Serbians, 250,000 Gypsies, Sinti, and Lalleri, 80,000 Germans (for political reasons), 70,000 German handicapped, 12,000 homosexuals, and 2,500 Jehovah’s Witnesses.

^ Feig, Konnilyn G. (1981). Hitler's death camps: the sanity of madness. Holmes & Meier Publishers. p. 30. ISBN 0841906750 – via book excerpt in full screen. On November 4, 1943, Globocnik wrote to Himmler from Trieste: "I have, on Oct. 19, 1943, completed Action Reinhard, and closed all the camps." He asked for special medals for his men in recognition of their "specially difficult task". Himmler responded warmly to 'Globos' on November 30, 1943, thanking him for carrying out Operation Reinhard. Also in: Holocaust Encyclopedia. ""Final Solution": Overview". Washington, DC: United States Holocaust Memorial Museum. Archived from the original on 2 March 2013.
By the end of September, the SS had started to develop plans to deport Jews to newly invaded Poland: the first steps towards the systematic murder that would follow. In Poland itself, thousands of Poles and Jews were rounded up and shot, early indications of the systematic murder that would follow. Alongside this, Hitler approved a new programme of euthanasia to exterminate the handicapped and mentally ill.
But the exhortations of both Isaiah and the Jerusalem Talmud would also seem to apply, collectively and individually, to the thousands of Poles who saved Jews, often exposing themselves to considerably greater danger than those who acted similarly in Nazi-occupied Western Europe. Nor is the message of these passages limited to acts of heroic selflessness during the Shoah. Think, for instance, of Zidan Saif, the Druze policeman who gave his life defending a Jerusalem synagogue against terrorists in 2014—or, in the realm of power politics, of those many Gentiles, from Arthur Balfour to Harry Truman to Daniel P. Moynihan, who at decisive moments in history have spoken up for the Jewish people and the Jewish state.
Mengele's work also involved carrying out selections, a task that he chose to perform even when he was not assigned to do so, in the hope of finding subjects for his experiments,[33] with a particular interest in locating sets of twins.[34] In contrast to most of the other SS doctors, who viewed selections as one of their most stressful and unpleasant duties, he undertook the task with a flamboyant air, often smiling or whistling a tune.[35][31] He was also one of the SS doctors responsible for supervising the administration of Zyklon B, the cyanide-based pesticide that was used for the mass killings in the Birkenau gas chambers. He served in this capacity at the gas chambers located in crematoria IV and V.[36]