Perhaps the main area of dispute about this process concerns Hitler’s precise role in ordering the killing of the Jews. Remarkably, we simply do not know, in an unequivocal way, what Hitler’s precise role was. The dictator often gave oral orders to senior henchmen such as Heinrich Himmler that were never written down, and historians can only infer Hitler’s precise role and intentions from evidence which is infuriatingly inadequate and contradictory. Because of the lack of unambiguous evidence, historians have been divided for decades, rather misleadingly, into so-called “intentionalists,” who argue that Hitler always intended to kill the Jews, and “functionalists,” who claim that the killing process somehow, as it were, welled up from local SS units in Russia until it became general Nazi policy.
The geographical patterns of local hostility to Jews influenced receptivity to their rescue. Thus, western Europe (France, Belgium, and the Netherlands), Scandinavia (Denmark and Finland), and southern Europe (Italy and Greece) adapted rapidly to the problems of hiding and rescuing Jews, whereas eastern and central Europe (Poland, the Ukraine, and Austria) remained a more hostile environment to rescue efforts.

In May, Nazis under the direction of SS Lt. Colonel Adolf Eichmann boldly began a mass deportation of the last major surviving population of European Jews. From May 15 to July 9, over 430,000 Hungarian Jews were deported to Auschwitz. During this time, Auschwitz recorded its highest-ever daily number of persons killed and cremated at just over 9000. Six huge open pits were used to burn the bodies, as the number of dead exceeded the capacity of the crematories.
The Germans invaded the Netherlands, Luxembourg, Belgium, and France in May 1940. In the Netherlands, the Germans installed Arthur Seyss-Inquart as Reichskommissar, who quickly began to persecute the approximately 140,000 Dutch Jews. Jews were forced out of their jobs and had to register with the government. Non-Jewish Dutch citizens protested these measures, and in February 1941 they staged a strike that was quickly crushed.[161] After Belgium's surrender at the end of May 1940, it was ruled by a German military governor, Alexander von Falkenhausen, who enacted anti-Jewish measures against the country's 90,000 Jews, many of whom were refugees from Germany or Eastern Europe.[162]
By 1943 it was evident to the armed forces leadership that Germany was losing the war.[358] The mass murder continued nevertheless, reaching a "frenetic" pace in 1944.[359] Auschwitz was gassing up to 6,000 Jews a day by spring that year.[360] On 19 March 1944, Hitler ordered the military occupation of Hungary and dispatched Eichmann to Budapest to supervise the deportation of the country's Jews.[361] From 22 March, Jews were required to wear the yellow star; forbidden from owning cars, bicycles, radios or telephones; then forced into ghettos.[362] From 15 May to 9 July, 440,000 Jews were deported from Hungary to Auschwitz-Birkenau, almost all to the gas chambers.[v] A month before the deportations began, Eichmann offered to exchange one million Jews for 10,000 trucks and other goods from the Allies, the so-called "blood for goods" proposal.[365] The Times called it "a new level of fantasy and self-deception".[366]

After the U.S. government refused to permit the passenger’s refuge, the St. Louis left Cuba for Europe. The St. Louis sailed so close to Florida that they could see the lights of Miami. The passengers were able to find refuge in other European countries so they didn’t have to return to Germany. Great Britain took 288, the Netherlands admitted 181; Belgium took 214, and 224 passengers found temporary refuge in France. When  Germany invaded Western Europe, 532 of the original passengers were trapped. Just over half survived the Holocaust.
Sprawozdanie 6/42 was sent to Polish officials in London by courier and had reached them by 12 November 1942, when it was translated into English and added to another report, "Report on Conditions in Poland". Dated 27 November, this was forwarded to the Polish Embassy in the United States.[341] On 10 December 1942, the Polish Foreign Affairs Minister, Edward Raczyński, addressed the fledgling United Nations on the killings; the address was distributed with the title The Mass Extermination of Jews in German Occupied Poland. He told them about the use of poison gas; about Treblinka, Bełżec and Sobibor; that the Polish underground had referred to them as extermination camps; and that tens of thousands of Jews had been killed in Bełżec in March and April 1942.[342] One in three Jews in Poland were already dead, he estimated, from a population of 3,130,000.[343] Raczyński's address was covered by the New York Times and The Times of London. Winston Churchill received it, and Anthony Eden presented it to the British cabinet. On 17 December 1942, 11 Allies issued the Joint Declaration by Members of the United Nations condemning the "bestial policy of cold-blooded extermination".[344][345]
Whereas Christopher Browning places the Nazi plan to exterminate the Jews in the context of the Wehrmacht victories on the Eastern front, Cesarani argues that the German subsequent realisation that there would be no swift victory over the Soviet Union "scuppered the last territorial 'solution' still on the table: expulsion to Siberia".[119] Germany's declaration of war on the United States on December 11, 1941, "meant that holding European Jews hostage to deter the US from entering the conflict was now pointless. As Joseph Goebbels put it when he summarised a secret speech Hitler made on 12 December 1941: 'The world war is here, the destruction of the Jews must be the inevitable consequence'."[119][120] Cesarani concludes, the Holocaust "was rooted in anti-Semitism, but it was shaped by war".[119] The fact that the Nazis were, ultimately, so successful in killing between five and six million Jews was not due to the efficiency of the Third Reich or the clarity of their policies. "Rather, the catastrophic rate of killing was due to German persistence … and the duration of the murderous campaigns. This last factor was largely a consequence of allied military failure."[121]
Sources: C.A.N.D.L.E.S; Kor, Eva Mozes. Echoes from Auschwitz. IN.: C.A.N.D.L.E.S. 1995; Lifton, Robert Jay. The Nazi Doctors. The United States: Basic Books. 1986; Nyiszli., Dr. Miklos. Auschwitz: A Doctor's Eyewitness Account. New York: Fawcett Crest. 1960; Posner, Gerald L. and John Ware. Mengele: The Complete Story. New York: Dell Publishing. 1986; Ramati, Alexander. And the Violins Stopped Playing

By the late 1930s there was a desperate search for countries of refuge. Those who could obtain visas and qualify under stringent quotas emigrated to the United States. Many went to Palestine, where the small Jewish community was willing to receive refugees. Still others sought refuge in neighbouring European countries. Most countries, however, were unwilling to receive large numbers of refugees.

Anne’s diary, a devastating and relatable coming-of-age story, was left behind in the Secret Annex, but kept safe by a family friend, Miep Gies. Anne's father, Otto Frank, was the Secret Annex's sole survivor of the Holocaust. After Otto was liberated from a concentration camp, Miep gave him the diary. Otto Frank edited the diary and removed a few sensitive passages—some that weren’t so nice about Anne’s mom, other Secret Annex members, or parts that seemed too sexual for a teenager in the 1940's. However, the most currently printed versions are more complete.
The wounds of the Holocaust–known in Hebrew as Shoah, or catastrophe–were slow to heal. Survivors of the camps found it nearly impossible to return home, as in many cases they had lost their families and been denounced by their non-Jewish neighbors. As a result, the late 1940s saw an unprecedented number of refugees, POWs and other displaced populations moving across Europe.
Below are figures for the number of Jews murdered in each country that came under German domination. They are estimates, as are all figures relating to Holocaust victims. The numbers given here for Czechoslovakia, Hungary and Romania are based on their territorial borders before the 1938 Munich agreement. The total number of six million Jews murdered during the Holocaust, which emerged from the Nuremberg trials, is also an estimate. Numbers have ranged between five and seven million killed.
The Nazis established ghettos in occupied Poland. Polish and western European Jews were deported to these ghettos. During the German invasion of the Soviet Union in 1941, mobile killing squads (Einsatzgruppen) began killing entire Jewish communities. The methods used, mainly shooting or gas vans, were soon regarded as inefficient and as a psychological burden on the killers.

Upon arrival at a camp, the inmates were usually stripped of all their valuables and clothes. They were then shorn of body hair, disinfected, given a shower, and issued a striped prison uniform without regard to size. Each step of the process was designed to dehumanize the prisoners, both physically and emotionally. Each prisoner was given a number. At Auschwitz, for example, the number was tattooed on the arm, but some camps did not tattoo their inmates.
In his monograph, The Origins Of The Final Solution: The Evolution of Nazi Jewish Policy, September 1939 – March 1942, Christopher Browning argues that Nazi policy toward the Jews was radicalized twice: in September 1939, when the invasion of Poland implied policies of mass expulsion and massive loss of Jewish lives; and in spring 1941, when preparation for Operation Barbarossa involved the planning of mass execution, mass expulsion, and starvation – to dwarf what had happened in Jewish Poland.[113]
Prior to his arrival at Auschwitz, he had published three articles, one of which was his dissertation in the Anthropological Institute at the University of Munich and which was entitled "Racial-Morphological Examination of the Anterior Portion of the Lower Jaw in Four Racial Groups". His medical dissertation, published in 1938, was entitled "Genealogical Studies in the Cases of Cleft Lip-Jaw-Palate". This was a predecessor to his work on genetic abnormalities and indirectly on twins which was to take place at Auschwitz. The third article - entitled "Hereditary Transmission of Fistulae Auris" was published in conjunction with research done on the Lenz-Vershuer principle of "irregular, dominant hereditary process". It appeared in 1928 that Mengele was destined for the academia.
Polish gentiles who rescued Jews had several obstacles to overcome. The most serious were the German laws against protecting Jews and the corresponding obligation to identify those who violated these laws. On 15 October 1941, the Nazis introduced a widely publicized law making unauthorized Jewish movement outside ghettos a crime punishable by death. The same punishment applied to gentiles who helped Jews escape. Transgressions were promptly followed by executions that were also widely publicized.
"For the survivor who chooses to testify, it is clear: his duty is to bear witness for the dead and the living. He has no right to deprive future generations of a past that belongs to our collective memory. To forget would be not only dangerous but offensive; to forget the dead would be akin to killing them a second time. The witness has forced himself to testify. For the youth of today, for the children who will be born tomorrow. He does not want his past to become their future." Elie Wiesel, Night, Preface to the New Translation (New York: Hill and Wang, c2006), page xv.
Finland was pressured in 1942 to hand over its 150–200 non-Finnish Jews to Germany. After opposition from the government and public, eight non-Finnish Jews were deported in late 1942; only one survived the war.[173] Japan had little antisemitism in its society and did not persecute Jews in most of the territories it controlled. Jews in Shanghai were confined, but despite German pressure they were not killed.[174]
Over the decades that followed, ordinary Germans struggled with the Holocaust’s bitter legacy, as survivors and the families of victims sought restitution of wealth and property confiscated during the Nazi years. Beginning in 1953, the German government made payments to individual Jews and to the Jewish people as a way of acknowledging the German people’s responsibility for the crimes committed in their name.
The forest burst orange with gunfire. “I looked around: Our entire path was filled with people crawling,” Farber has written. “Some jumped up and started running in various directions.” Farber and Dogim cut through the fence and tore off into the woods, with Zeidel and three others in tow. The men ran all night, through rivers, through forests, past villages. After a week, the escapees were deep inside the Rudnitsky Woods. Farber introduced himself to the partisan leader. “Where do you come from?” the man asked.

Anne had expressed the desire in the rewritten introduction of her diary for one person that she could call her truest friend, that is, a person to whom she could confide her deepest thoughts and feelings. She observed that she had many "friends" and equally many admirers, but (by her own definition) no true, dear friend with whom she could share her innermost thoughts. She originally thought her girl friend Jacque van Maarsen would be this person, but that was only partially successful. In an early diary passage, she remarks that she is not in love with Helmut "Hello" Silberberg, her suitor at that time, but considered that he might become a true friend. In hiding, she invested much time and effort into her budding romance with Peter van Pels, thinking he might evolve into that one, true friend, but that was eventually a disappointment to her in some ways, also, though she still cared for him very much. Ultimately, it was only to Kitty that she entrusted her innermost thoughts.
In his 1965 essay "Command and Compliance", which originated in his work as an expert witness for the prosecution at the Frankfurt Auschwitz Trials, the German historian Hans Buchheim wrote there was no coercion to murder Jews and others, and all who committed such actions did so out of free will. Buchheim wrote that chances to avoid executing criminal orders "were both more numerous and more real than those concerned are generally prepared to admit",[468] and that he found no evidence that SS men who refused to carry out criminal orders were sent to concentration camps or executed.[469] Moreover, SS rules prohibited acts of gratuitous sadism, as Himmler wished for his men to remain "decent"; acts of sadism were carried out on the initiative of those who were either especially cruel or wished to prove themselves ardent National Socialists.[468] Finally, he argued that those of a non-criminal bent who committed crimes did so because they wished to conform to the values of the group they had joined and were afraid of being branded "weak" by their colleagues if they refused.[470]
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]