However, the capital of this bureaucratized and industrialized world of mass murders was Auschwitz. An operative concentration camp since May 1940, in the autumn of 1941 it was equipped with gas chambers. According to the latest estimates, the number of Jews killed in this camp approximated 1.5 million. In Auschwitz II (Birkenau), symbol and synonym of the Holocaust, the Nazi program of mass extermination reached its highest level of “perfection.”

Mengele was born on 16 March 1911 to Walburga (née Hupfauer) and Karl Mengele in Günzburg, Bavaria, Germany.[4] He was the oldest of three children; his two younger brothers were Karl Jr. and Alois. Their father was founder of the Karl Mengele & Sons company, producers of farm machinery.[5] Josef was successful at school and developed an interest in music, art, and skiing.[6] He completed high school in April 1930 and went on to study philosophy in Munich,[7] where the headquarters of the Nazi Party were located.[8] In 1931, Mengele joined the Stahlhelm, Bund der Frontsoldaten, a paramilitary organization that was absorbed into the Nazi Sturmabteilung (Storm Detachment; SA) in 1934.[7][9]
Meanwhile, sightings of Josef Mengele were being reported all over the world. Wiesenthal claimed to have information that placed Mengele on the Greek island of Kythnos in 1960,[103] in Cairo in 1961,[104] in Spain in 1971,[105] and in Paraguay in 1978, eighteen years after he had left the country.[106] He insisted as late as 1985 that Mengele was still alive—six years after he had died—having previously offered a reward of US$100,000 in 1982 for the fugitive's capture.[107] Worldwide interest in the case was heightened by a mock trial held in Jerusalem in February 1985, featuring the testimonies of over one hundred victims of Mengele's experiments. Shortly afterwards, the West German, Israeli, and U.S. governments launched a coordinated effort to determine Mengele's whereabouts. The West German and Israeli governments offered rewards for his capture, as did The Washington Times and the Simon Wiesenthal Center.[108]

Resistance movements also helped Jews. Sometimes, this aid was intended to help the Jews; often it was rendered in the context of the general anti-Nazi resistance. In Yugoslavia, Serbian partisans attacked a concentration camp near Nish in 1941, freeing a small number of Jews. On April 19, 1943, the Committee for Jewish Defense, aided by Christian railroad workers, attacked a Belgian transport leaving Malines for Auschwitz. Several hundred Jewish deportees escaped with the help of the Belgian resistance.
He was capable of being so kind to the children, to have them become fond of him, to bring them sugar, to think of small details in their daily lives, and to do things we would genuinely admire ... And then, next to that, ... the crematoria smoke, and these children, tomorrow or in a half-hour, he is going to send them there. Well, that is where the anomaly lay.[48]
In 1937 he joined the Nazi party, then in 1938 he went to the SS. In 1942 he was wounded at the Russian front and was pronounced unfit for duty. After that he volunteered to go to the concentration camp, he was sent to the death camp, Auschwitz. Dr. Josef Mengele, nicknamed "the Angel of Death", became the surviving symbol of Adolf Hitler's "Final Solution".
Additional barriers stemmed from antisemitism, which was rampant in the cultural climate of Eastern Europe. Gentile rescuers thus often feared censure from their fellow citizens. Moreover, significant numbers of gentiles had to confront their own personal, sometimes unconscious, anti-Jewish feelings. Indeed, postwar interviews with rescuers have shown that although they tended to describe the Jews they saved as fine people, many characterized Jews in general as dirty, loud, greedy, aggressive, dishonest, deceitful, or underhanded.
Before the start of World War II, around 9.5 million Jewish people lived in Europe. By the time the war ended, the Nazis had killed 6 million European Jews in concentration camps, or pogroms, or ghettos, or mass executions in what we refer to today as the Holocaust. The Nazis used the term Endlösung, or Final Solution, as the “answer” to the “Jewish question.” But when did this monstrous plan get put in motion?
The Final Solution was a plan of Adolf Hitler's to kill all the Jews in Europe. Hitler's Anti- Semitic ideas were so strong that he released hatred by mass murder. Before Hitler decided to become dictator the Final Solution was already in his head. In a couple of books written by Gerald Fleming Hitler says '' Once I  am really in power my first task will be the genocide of the Jews .'' He achieved his goal by killing six million Jews. Hitler began  the final solution in every European Nation he was  control of. The Jews were sent to concentration/death camps.
In order to make way for these new prisoners, the SS took many thousands of Jews from the ghettos of Kovno, Riga, Minsk, Łódź, Lvov and Lublin to be murdered by the Einsatzgruppen. Even though the SS claimed to be the hardened ‘Master Race’, quite a few of them found it ‘difficult’ to murder women and children. In addition, the shooting process used by the Einsatzgruppen was expensive.
During the Nazi occupation of the Netherlands, Anne Frank received a blank diary as one of her presents on June 12, 1942, her 13th birthday.[8][9] According to the Anne Frank House, the red, checkered autograph book which Anne used as her diary was actually not a surprise, since she had chosen it the day before with her father when browsing a bookstore near her home.[9] She began to write in it on June 14, 1942, two days later.[10][11]
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]
The Polish government-in-exile in London learned about the extermination camps from the Polish leadership in Warsaw, who from 1940 "received a continual flow of information about Auschwitz", according to historian Michael Fleming.[333] This was in large measure thanks to Captain Witold Pilecki of the Polish Home Army, who allowed himself to be arrested in Warsaw and spent 945 days in Auschwitz from September 1940 until April 1943, organizing the resistance movement inside the camp.[334]
The Nazis regarded the Slavs as subhuman, or Untermenschen.[426] In a secret memorandum dated 25 May 1940, Himmler stated that it was in German interests to foster divisions between the ethnic groups in the East. He wanted to restrict non-Germans in the conquered territories to schools that would only teach them how to write their own name, count up to 500, and obey Germans.[427][y] In November 1939 German planners called for "the complete destruction" of all Poles[430] and resettlement of the land by German colonists.[431] The Polish political leadership was the target of a campaign of murder (Intelligenzaktion and AB-Aktion).[432] Between 1.8 and 1.9 million non-Jewish Polish citizens perished at German hands during the course of the war; about four-fifths were ethnic Poles and the rest Ukrainians and Belarusians.[410] At least 200,000 died in concentration camps, around 146,000 in Auschwitz. Others died in massacres or in uprisings such as the Warsaw Uprising, where 120,000–200,000 were killed.[433] During the occupation, the Germans adopted a policy of restricting food and medical services, as well as degrading sanitation and public hygiene.[434] The death rate rose from 13 per 1000 before the war to 18 per 1000 during the war.[435] Around 6 million of World War II victims were Polish citizens; half the death toll were Jews.[436] Over the course of the war Poland lost 20 percent of its pre-war population.[436] Over 90 percent of the death toll came through non-military losses, through various deliberate actions by Germany and the Soviet Union.[433] Polish children were also kidnapped by Germans to be "Germanized", with perhaps as many as 200,000 children stolen from their families.[437]
While the Nazis murdered other national and ethnic groups, such as a number of Soviet prisoners of war, Polish intellectuals, and gypsies, only the Jews were marked for systematic and total annihilation. Jews were singled out for "Special Treatment" (Sonderbehandlung), which meant that Jewish men, women and children were to be methodically killed with poisonous gas. In the exacting records kept at the Auschwitz death camp, the cause of death of Jews who had been gassed was indicated by "SB," the first letters of the two words that form the German term for "Special Treatment."
Walking the grounds of the memorial site, I arrived with Freund at the lip of the pit that had housed the bunker where Zeidel and the other members of the Burning Brigade had lived. The circumference was tremendous, nearly 200 feet in total. On its grassy floor, the Vilna Gaon Museum had erected a model of a double-sided ramp that the Burning Brigade had used to drop bodies onto the pyres.

The Nazis considered Jews to be the main danger to Germany. Jews were the primary victims of Nazi racism, but other victims included Roma (Gypsies) and people with mental or physical disabilities. The Nazis murdered some 200,000 Roma. And they murdered at least 250,000 mentally or physically disabled patients, mainly German and living in institutions, in the so-called Euthanasia Program.
Many healthy, young strong Jews were not killed immediately. The Germans' war effort and the “Final Solution” required a great deal of manpower, so the Germans reserved large pools of Jews for slave labor. These people, imprisoned in concentration and labor camps, were forced to work in German munitions and other factories, such as I.G. Farben and Krupps, and wherever the Nazis needed laborers. They were worked from dawn until dark without adequate food and shelter. Thousands perished, literally worked to death by the Germans and their collaborators.
However, an examination of other variables suggests that rescuers shared a cluster of common personal characteristics. One of these can be called individuality or separateness. Polish rescuers often did not quite fit into their social environments. To illustrate, the peasant Jan Rybak, who helped save both Jews and Russian prisoners of war during the German occupation, had little formal education but was nonetheless a compulsive reader. His knowledge and love for learning gained him the nickname philosopher. Moreover, he avoided alcohol and did not follow the local custom of wife beating.
After 24 hours in the darkness, she followed one shining light that turned out to be at an unguarded barracks. The small group of surprised prisoners took her in. This group, with Lyon among them, was ordered into cattle cars and taken away from Auschwitz. Lyon longed to see her mother and sister again, but knew she faced certain death if she were discovered in Auschwitz.
Some Germans, even some Nazis, dissented from the murder of the Jews and came to their aid. The most famous was Oskar Schindler, a Nazi businessman, who had set up operations using involuntary labour in German-occupied Poland in order to profit from the war. Eventually, he moved to protect his Jewish workers from deportation to extermination camps. In all occupied countries, there were individuals who came to the rescue of Jews, offering a place to hide, some food, or shelter for days or weeks or even for the duration of the war. Most of the rescuers did not see their actions as heroic but felt bound to the Jews by a common sense of humanity. Israel later recognized rescuers with honorary citizenship and commemoration at Yad Vashem, Israel’s memorial to the Holocaust.

According to scholars Christian Gerlach and Peter Monteath, among others, the pivotal moment for Hitler’s decision came on December 12, 1941, at a secret meeting with some 50 Nazi officials, including Joseph Goebbels (Nazi minister of propaganda) and Hans Frank (governor of occupied Poland). Though no written documents of the meeting survive, Goebbels described the meeting in his journal on December 13, 1941:

Romania implemented anti-Jewish measures in May and June 1940 as part of its efforts towards an alliance with Germany. Jews were forced from government service, pogroms were carried out, and by March 1941 all Jews had lost their jobs and had their property confiscated.[169] After Romania joined the invasion of the Soviet Union in June 1941, at least 13,266 Jews were killed in the Iași pogrom,[170] and Romanian troops carried out massacres in Romanian-controlled territory, including the Odessa massacre of 20,000 Jews in Odessa in late 1941. Romania also set up concentration camps under its control in Transnistria, where 154,000–170,000 Jews were deported from 1941 to 1943.[169]

Soviet civilian populations in the occupied areas were heavily persecuted.[438] Villages throughout the Soviet Union were destroyed by German troops.[439] Germans rounded up civilians for forced labor in Germany and caused famine by taking foodstuffs.[440] In Belarus, Germany imposed a regime that deported some 380,000 people for slave labor and killed hundreds of thousands of civilians. Over 600 villages had their entire populations killed, and at least 5,295 Belarusian settlements were destroyed by the Germans. According to Timothy Snyder, of "the nine million people who were in the territory of Soviet Belarus in 1941, some 1.6 million were killed by the Germans in actions away from battlefields, including about 700,000 prisoners of war, 500,000 Jews, and 320,000 people counted as partisans (the vast majority of whom were unarmed civilians)".[441] The United States Holocaust Memorial Museum has estimated that 3.3 million of 5.7 million Soviet POWs died in German custody.[442] The death rates decreased as the POWs were needed to help the German war effort; by 1943, half a million had been deployed as slave labor.[409]

There is no postwar institution specializing in either World War II or the Holocaust that has collected systematic data about the righteous or about Christian-Jewish relations during the war years. Postwar historiography has given scant attention to this subject, except for biographies of heroes like Raoul Wallenberg in Budapest. Individual episodes are recorded in numerous published memoirs or hidden within the histories of the Jewish communities under German occupation. Others are found in some survivor testimonies, oral histories, and depositions.

On 31 May 1985, acting on intelligence received by the West German prosecutor's office, police raided the house of Hans Sedlmeier, a lifelong friend of Mengele and sales manager of the family firm in Günzburg.[109] They found a coded address book and copies of letters sent to and received from Mengele. Among the papers was a letter from Wolfram Bossert notifying Sedlmeier of Mengele's death.[110] German authorities alerted the police in São Paulo, who then contacted the Bosserts. Under interrogation, they revealed the location of Mengele's grave,[111] and the remains were exhumed on 6 June 1985. Extensive forensic examination indicated with a high degree of probability that the body was indeed that of Josef Mengele.[112] Rolf Mengele issued a statement on 10 June confirming that the body was his father's, and he admitted that the news of his father's death had been concealed in order to protect the people who had sheltered him for many years.[113]
“I am marshalling my last remaining strength in order to die peacefully as one who will not surrender and who will not ask for forgiveness. The historical fact that Israel became the leading social political superpower in the 19th century lies before us. We have amongst us a flexible, tenacious, intelligent foreign tribe that knows how to bring abstract reality into play in many different ways. Not individual Jews but the Jewish spirit and Jewish consciousness have overpowered the world. All this is the consequence of a cultural history so unique in its way, so grand that every day polemic can achieve nothing against it. With the entire force of its armies the proud Roman Empire did not achieve that which Semitism has achieved in the West and particularly in Germany.”

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)
Browning also notes that the destruction of the Jews went hand-in-hand with a much wider attempt at “ethnic cleansing” throughout Eastern Europe. The Nazis had well-advanced plans, which might have been realized had they won the war, to remove by force millions of Poles and other Slavs to Siberia, with vast numbers certain to die en route. One of the major merits of Browning’s book is its detailed discussion of these plans, as well as Nazi policies towards the gypsies. Browning notes, correctly, that the Nazis killed large numbers of gypsies even though Hitler hardly ever mentioned them and certainly did not have anti-gypsy hostility at the heart of his ideology. Browning also offers a detailed consideration of the Nazi program of murdering the physically and mentally handicapped among “Aryan” Germans (the “T4 program”), which began in mid-1939 and eventually claimed seventy thousand victims before it was stopped in mid-1941, and he reports that many of the killers in the T4 program went on to be directly involved with the extermination of the Jews in Eastern Europe.
Mengele’s father was founder of a company that produced farm machinery, Firma Karl Mengele & Söhne, in the village of Günzburg in Bavaria. Mengele studied philosophy in Munich in the 1920s, coming under the influence of the racial ideology of Alfred Rosenberg, and then took a medical degree at the University of Frankfurt am Main. He enlisted in the Sturmabteilung (SA; “Assault Division”) in 1933. An ardent Nazi, he joined the research staff of a newly founded Institute for Hereditary Biology and Racial Hygiene in 1934. During World War II he served as a medical officer with the Waffen-SS (the “armed” component of the Nazi paramilitary corps) in France and Russia. In 1943 he was appointed by Heinrich Himmler to be chief doctor at Birkenau, the supplementary extermination camp at Auschwitz, where he and his staff selected incoming Jews for labour or extermination and where he supervised medical experiments on inmates to discover means of increasing fertility (to increase the German “race”). His chief interest, however, was research on twins.
The Third Reich first used concentration camps as places of unlawful incarceration of political opponents and other "enemies of the state". Large numbers of Jews were not sent there until after Kristallnacht in November 1938.[182] Although death rates were high, the camps were not designed as killing centers.[183] After war broke out in 1939, new camps were established, some outside Germany in occupied Europe.[184] In January 1945, the SS reports had over 700,000 prisoners in their control, of which close to half had died by the end of May 1945 according to most historians.[185] Most wartime prisoners of the camps were not Germans but belonged to countries under German occupation.[186]

Life within Nazi concentration camps was horrible. Prisoners were forced to do hard physical labor and given little food. Prisoners slept three or more to a crowded wooden bunk; bedding was unheard of. Torture within the concentration camps was common and deaths were frequent. At a number of concentration camps, Nazi doctors conducted medical experiments on prisoners against their will.
Albert Goering loathed all of Nazism's inhumanity and at the risk of his career, fortune and life, used his name and connections to save hundreds of Jews and and political dissidents during the Second World War. After the war Albert Goering - savior of victims of the tyranny his brother helped create - was imprisoned for several years for his name alone. But his story is almost unknown: he was shoved into obscurity by the enormity of his brother's crimes.
In 1935, Mengele earned a PhD in anthropology from the University of Munich.[7] In January 1937, he joined the Institute for Hereditary Biology and Racial Hygiene in Frankfurt, where he worked for Dr. Otmar Freiherr von Verschuer, a German geneticist with a particular interest in researching twins.[7] As von Verschuer's assistant, Mengele focused on the genetic factors that result in a cleft lip and palate, or a cleft chin.[10] His thesis on the subject earned him a cum laude doctorate in medicine (MD) from the University of Frankfurt in 1938.[11] (Both of his degrees were revoked by the issuing universities in the 1960s.)[12] In a letter of recommendation, von Verschuer praised Mengele's reliability and his ability to verbally present complex material in a clear manner.[13] The American author Robert Jay Lifton notes that Mengele's published works were in keeping with the scientific mainstream of the time, and would probably have been viewed as valid scientific efforts even outside Nazi Germany.[13]