Many of the horrors associated with Auschwitz—gas chambers, medical experiments, working prisoners to death—had been pioneered in earlier concentration camps. In the late thirties, driven largely by Himmler’s ambition to make the S.S. an independent economic and military power within the state, the K.L. began a transformation from a site of punishment to a site of production. The two missions were connected: the “work-shy” and other unproductive elements were seen as “useless mouths,” and forced labor was a way of making them contribute to the community. Oswald Pohl, the S.S. bureaucrat in charge of economic affairs, had gained control of the camps by 1938, and began a series of grandiose building projects. The most ambitious was the construction of a brick factory near Sachsenhausen, which was intended to produce a hundred and fifty million bricks a year, using cutting-edge equipment and camp labor.
For the purpose of centralisation in the Gleichschaltung process a rigidly hierarchal structure was established in the Nazi Party, which it later carried through in the whole of Germany in order to consolidate total power under the person of Hitler (Führerstaat). It was regionally sub-divided into a number of Gaue (singular: Gau) headed by a Gauleiter, who received their orders directly from Hitler. The name (originally a term for sub-regions of the Holy Roman Empire headed by a Gaugraf) for these new provincial structures was deliberately chosen because of its mediaeval connotations. The term is approximately equivalent to the English shire.

In Germany the words 'protective custody' have a double meaning. Originally the term meant the incarceration of people who were threatened by others and who were guarded for their own safety so that they might be protected from their enemies. Now, however, men in protective custody are mostly those who are brought, for the 'protection of the people and the State,' into a concentration camp without hearing, without court sentence, without the possibility of redress, and for an indefinite time. Frequently people sentenced by a court are taken into protective custody by the Gestapo after serving their prison sentence, often directly from the prison gate. Such, for example, was the fate of Pastor Niemöller, who, after being released from prison, was taken into the camp Sachsenhausen near Oranienburg, the camp with which we shall be concerned here. He is in solitary confinement there, and I never saw him.
In Mein Kampf, Hitler stated that Lebensraum would be acquired in Eastern Europe, especially Russia.[132] In his early years as the Nazi leader, Hitler had claimed that he would be willing to accept friendly relations with Russia on the tactical condition that Russia agree to return to the borders established by the German–Russian peace agreement of the Treaty of Brest-Litovsk signed by Vladimir Lenin of the Russian Soviet Federated Socialist Republic in 1918 which gave large territories held by Russia to German control in exchange for peace.[131] In 1921, Hitler had commended the Treaty of Brest-Litovsk as opening the possibility for restoration of relations between Germany and Russia by saying:
In April 1940, Rudolph Höss, who become the first commandant of Auschwitz, identified the Silesian town of Oswiecim in Poland as a possible site for a concentration camp. Initially, the camp was meant to intimidate Poles to prevent them from protesting German rule and to serve as a prison for those who did resist. It was also perceived as a cornerstone of the policy to re-colonize Upper Silesia, which had once been a German region, with “pure Aryans.” When the plans for the camp were approved, the Nazi’s changed the name of the area to Auschwitz.
In May 14, 1940, the Netherlands surrendered to Germany after the bombing of Rotterdam, having being invaded just five days earlier. The following month, Anne turned 10. The restrictions and persecution the Franks had faced in Germany were brought to their new home. Otto transferred control of his businesses to trusted colleagues to make the business appear Aryan-owned and to avoid having to register it with the German authorities. The family had to register as Jews with the German authorities in January 1942 and all Dutch Jews were ordered to Amsterdam.
Among the key elements of Nazism were anti-parliamentarism, Pan-Germanism (a political movement aiming for unity of the German-speaking peoples of Europe), racism, collectivism (any moral, political, or social outlook, that stresses human interdependence and the importance of a collective, rather than the importance of separate individuals), antisemitism (intense dislike for and prejudice against Jewish people), anti-communism, totalitarianism and opposition to economic liberalism and political liberalism, and eugenics (scientific field involving the selective breeding of humans in order to achieve desirable traits in future generations).
Pope Pius XI had the "Mit brennender Sorge" ("With Burning Concern") encyclical smuggled into Germany for Passion Sunday 1937 and read from every pulpit as it denounced the systematic hostility of the regime toward the church.[421][427] In response, Goebbels renewed the regime's crackdown and propaganda against Catholics. Enrolment in denominational schools dropped sharply and by 1939 all such schools were disbanded or converted to public facilities.[428] Later Catholic protests included the 22 March 1942 pastoral letter by the German bishops on "The Struggle against Christianity and the Church".[429] About 30 percent of Catholic priests were disciplined by police during the Nazi era.[430][431] A vast security network spied on the activities of clergy and priests were frequently denounced, arrested or sent to concentration camps – many to the dedicated clergy barracks at Dachau.[432] In the areas of Poland annexed in 1939, the Nazis instigated a brutal suppression and systematic dismantling of the Catholic Church.[433][434]
As the number of prisoners grew, the camp expanded from the original barracks facility. Auschwitz II-Birkenau, in the nearby village in Brzezinka, underwent construction in October 1941 with the original purpose to house Soviet prisoners of war. Together with Polish inmates, Soviet soldiers were subjected to Zyklon B tests by the camp's SS commanders towards the end of 1941. Beginning in 1942, Jews in massive numbers began to be sent to the camp complex, along with thousands of Roma prisoners. The complex later expanded to include Auschwitz III-Monowitz in October 1942, a slave labor camp providing work for the I.G. Farben industrial complex nearby. By the middle of the war, Auschwitz had grown to include 40 sub-camps in neighboring towns in the region.
German business leaders disliked Nazi ideology but came to support Hitler, because they saw the Nazis as a useful ally to promote their interests.[54] Business groups made significant financial contributions to the Nazi Party both before and after the Nazi seizure of power, in the hope that a Nazi dictatorship would eliminate the organized labour movement and the left-wing parties.[55] Hitler actively sought to gain the support of business leaders by arguing that private enterprise is incompatible with democracy.[56]
Between 1939 and 1945, the Nazi Party led regime, assisted by collaborationist governments and recruits from occupied countries, was responsible for the deaths of at least eleven million people,[94][95] including 5.5 to 6 million Jews (representing two-thirds of the Jewish population of Europe),[11][96][97] and between 200,000 and 1,500,000 Romani people.[98][99] The estimated total number includes the killing of nearly two million non-Jewish Poles,[100] over three million Soviet prisoners of war,[101] communists, and other political opponents, homosexuals, the physically and mentally disabled.[102][103]
Life for the eight people in the small apartment, which Anne Frank referred to as the Secret Annex, was tense. The group lived in constant fear of being discovered and could never go outside. They had to remain quiet during daytime in order to avoid detection by the people working in the warehouse below. Anne passed the time, in part, by chronicling her observations and feelings in a diary she had received for her 13th birthday, a month before her family went into hiding.
In addition to the Nazi Party proper, several paramilitary groups existed which "supported" Nazi aims. All members of these paramilitary organisations were required to become regular Nazi Party members first and could then enlist in the group of their choice. An exception was the Waffen-SS, considered the military arm of the SS and Nazi Party, which during the Second World War allowed members to enlist without joining the Nazi Party. Foreign volunteers of the Waffen-SS were also not required to be members of the Nazi Party, although many joined local nationalist groups from their own countries with the same aims. Police officers, including members of the Gestapo, frequently held SS rank for administrative reasons (known as "rank parity") and were likewise not required to be members of the Nazi Party.
Yet the question of Anne’s relationship to her Jewishness became a point of controversy between her father and the playwrights and dramatists. The 1955 Broadway play was written by two non-Jewish playwrights, while the play written in 1952 by the Jewish writer Meyer Levin (1905–1981) was rejected because, as the publishers who rejected it told Otto Frank, it was too Jewish, an assessment in which Otto Frank acquiesced. “I always said that … it was not a Jewish book,” he wrote to Levin, “so please do not make it into a Jewish play.” The version written by Albert Hackett and Frances Goodrich was more universal and especially less anti-German than Levin’s; in the United States of the 1950s—the period of the Cold War, the McCarthy era and the fight against the Soviet Union—Communist ideology was the principal enemy and the hostility to Germany of the 1940s was set aside. Several researchers of literature and film believe that the diary, which presented Anne’s character as an impressive human figure who clings to liberal-democratic values, increased the identification of Jews with these universal values, which coincided with the desire of American Jews to be part of the culture of the country that took them in, to assimilate into it, and to emphasize the Holocaust less since it bore out the uniqueness of the Jewish people.
Very heavy strategic bombing by the Allies targeted refineries producing synthetic oil and gasoline, as well as the German transportation system, especially rail yards and canals.[287] The armaments industry began to break down by September 1944. By November, fuel coal was no longer reaching its destinations and the production of new armaments was no longer possible.[288] Overy argues that the bombing strained the German war economy and forced it to divert up to one-fourth of its manpower and industry into anti-aircraft resources, which very likely shortened the war.[289]

Nazi racial theorist Hans F. K. Günther argued that European peoples were divided into five races: Nordic, Mediterranean, Dinaric, Alpine and East Baltic.[3] Günther applied a Nordicist conception in order to justify his belief that Nordics were the highest in the racial hierarchy.[3] In his book Rassenkunde des deutschen Volkes (1922) ("Racial Science of the German People"), Günther recognised Germans as being composed of all five races, but emphasized the strong Nordic heritage among them.[151] Hitler read Rassenkunde des deutschen Volkes, which influenced his racial policy.[152] Gunther believed that Slavs belonged to an "Eastern race" and he warned against Germans mixing with them.[153] The Nazis described Jews as being a racially mixed group of primarily Near Eastern and Oriental racial types.[154] Because such racial groups were concentrated outside Europe, the Nazis claimed that Jews were "racially alien" to all European peoples and that they did not have deep racial roots in Europe.[154]

Hitler's belief that abstract, Dadaist, expressionist and modern art were decadent became the basis for policy.[470] Many art museum directors lost their posts in 1933 and were replaced by party members.[471] Some 6,500 modern works of art were removed from museums and replaced with works chosen by a Nazi jury.[472] Exhibitions of the rejected pieces, under titles such as "Decadence in Art", were launched in sixteen different cities by 1935. The Degenerate Art Exhibition, organised by Goebbels, ran in Munich from July to November 1937. The exhibition proved wildly popular, attracting over two million visitors.[473]
I have been asked repeatedly where all the men were procured who torment the inmates of the camps, often with sadistic lust. We must not forget that a career in the S.S. allures, as a steppingstone, many a youth who cannot quite make the military career, whether for financial reasons or for lack of educational background. There are certainly a great number among them who personify brutality and are glad to be allowed to use their instincts without check against defenseless people. But there are also others who, for the sake of a career, run with the pack, and whose cruelties have been developed by the example of the 'talented' sadists.

Some Auschwitz prisoners were subjected to inhumane medical experimentation. The chief perpetrator of this barbaric research was Josef Mengele (1911-79), a German physician who began working at Auschwitz in 1943. Mengele, who came to be known as the “Angel of Death,” performed a range of experiments on detainees. For example, in an effort to study eye color, he injected serum into the eyeballs of dozens of children, causing them excruciating pain. He also injected chloroform into the hearts of twins, to determine if both siblings would die at the same time and in the same manner.

German doctors performed a variety of experiments on prisoners at Auschwitz. SS doctors tested the efficacy of X-rays as a sterilization device by administering large doses to female prisoners. Carl Clauberg injected chemicals into women's uteruses in an effort to glue them shut. Prisoners were infected with spotted fever for vaccination research and exposed to toxic substances to study the effects.[125] In one experiment Bayer, then part of IG Farben, paid RM 150 each for 150 female inmates from Auschwitz (the camp had asked for RM 200 per woman), who were transferred to a Bayer facility to test an anesthetic. A Bayer employee wrote to Rudolf Höss: "The transport of 150 women arrived in good condition. However, we were unable to obtain conclusive results because they died during the experiments. We would kindly request that you send us another group of women to the same number and at the same price." The Bayer research was led at Auschwitz by Helmuth Vetter of Bayer/IG Farben, who was also an Auschwitz physician and SS captain, and by Auschwitz physicians Friedrich Entress and Eduard Wirths.[126]
There were factions within the Nazi Party, both conservative and radical.[37] The conservative Nazi Hermann Göring urged Hitler to conciliate with capitalists and reactionaries.[37] Other prominent conservative Nazis included Heinrich Himmler and Reinhard Heydrich.[38] Meanwhile, the radical Nazi Joseph Goebbels opposed capitalism, viewing it as having Jews at its core and he stressed the need for the party to emphasize both a proletarian and a national character. Those views were shared by Otto Strasser, who later left the Nazi Party in the belief that Hitler had allegedly betrayed the party's socialist goals by endorsing capitalism.[37]
The United States is a nation with two radically different ideas at its heart: white supremacy and equality under the law. A nation that currently has more immigrants than any country in the world but is undergoing traumatic convulsions at the very mention of immigrants. A nation with a pessimistic mind and an optimistic soul, founded and codified by white men, whose geographic expansion was made possible by the violent clearing out of the original inhabitants, whose economic growth was purchased through slavery, but also a land where millions of immigrants have come in search of work and opportunity. The question of who counts in the “we” and who belongs to the “them” is being argued and fought every day, from the courtroom to the classroom to the streets. It is a conversation that has been taking place since the founding of the United States, and one that was taking place in Germany when the Nazi cabal seized the state. How this nation answers that question will determine which of the two American ideas lives on.

Of the seven people who hid in the secret annex, only Otto Frank survived. Upon returning to Amsterdam on June 3, he discovered that his employees had faithfully kept his business running, awaiting his return. He stayed with Miep Gies and her husband and immediately began searching for his daughters—in mid-July, he learned of their deaths at Bergen-Belsen.

My mother never talked very much about our time there, mainly to protect us and herself. She was 21 when we were finally able to leave, with a two-year-old and a six-week-old. She also took with us a four-year-old boy who was parentless and she spent months searching for his relatives, who she did finally track down. At the same time, she had lost her husband and was mourning him. There was an unspoken ban on speaking about any of it. We went back to live in Trenčín, the small town in Slovakia where my mother had moved when she married my father, and where the Red Cross found us a room.
Deportees were brought to Auschwitz crammed in wretched conditions into goods or cattle wagons, arriving near a railway station or at one of several dedicated trackside ramps, including one next to Auschwitz I. The Altejudenrampe (old Jewish ramp), part of the Oświęcim freight railway station, was used from 1942 to 1944 for Jewish transports.[102][103] Located between Auschwitz I and Auschwitz II, arriving at this ramp meant a 2.5 km journey to Auschwitz II and the gas chambers. Most deportees were forced to walk, accompanied by SS men and a car with a Red Cross symbol that carried the Zyklon B, as well as an SS doctor in case officers were poisoned by mistake. Inmates arriving at night, or who were too weak to walk, were taken by truck.[104] Work on another railway line and Judenrampe (pictured right) between sectors BI and BII in Auschwitz II, was completed in May 1944 for the arrival of Hungarian Jews,[103] who between May and early July 1944 were deported to Auschwitz II at a rate of 12,000 a day.[105] The rails led directly to the area around the gas chambers.[102]
No one knows better than you yourself, my Führer, that you were never the seventh member of the party, but at best the seventh member of the committee... And a few years ago I had to complain to a party office that your first proper membership card of the DAP, bearing the signatures of Schüssler and myself, was falsified, with the number 555 being erased and number 7 entered.[42]
On her thirteenth birthday, just before they went into hiding, Anne was presented with a diary. During the two years in hiding, Anne wrote about events in the Secret Annex, but also about her feelings and thoughts. In addition, she wrote short stories, started on a novel and copied passages from the books she read in her ‘Book of Beautiful Sentences’. Writing helped her pass the time. 
Nazi Germany maintained concentration camps (German: Konzentrationslager, KZ or KL) throughout the territories it controlled before and during the Second World War. The first Nazi camps were erected in Germany in March 1933 immediately after Hitler became Chancellor and his Nazi Party was given control of the police by Reich Interior Minister Wilhelm Frick and Prussian Acting Interior Minister Hermann Göring.[2] Used to hold and torture political opponents and union organizers, the camps initially held around 45,000 prisoners.[3] In 1933–1939, before the onset of war, most prisoners consisted of German Communists, Socialists, Social Democrats, Roma, Jehovah's Witnesses, homosexuals, and persons accused of 'asocial' or socially 'deviant' behavior by the Germans.[4]