Auschwitz didn’t long remain a camp exclusively for Poles. In June 1941, Germany launched a surprise invasion of the Soviet Union, taking three million prisoners over the next seven months. Many were starved to death. Others were sent to occupied Poland or Germany as slave laborers. In the fall of 1941, ten thousand prisoners of war arrived at Auschwitz and began building the Birkenau camp.
In 1944 we were sent on a death march from Birkenau to Oranienburg and from there to Buchenwald. Then to a quarry, where we were ordered to drill into the mountains to make some sort of secret city. From there we walked back to Buchenwald. Whoever was incapable of walking was shot. From there, big trains took us to Theresienstadt just as the Soviets were bombing the rails. We could sense that the Germans were almost destroyed. For 17 days we had no water, no food, nothing. Despite the hardship I was doing OK compared to others. I still had the capability to clamber on to the cattle trains without help.
Although the factory had been expected to begin production in 1943, shortages of labor and raw materials meant start-up had to be postponed repeatedly.[64] The Allies bombed the plant in 1944 on 20 August, 13 September, 18 December, and again on 26 December. On 19 January 1945, the SS ordered that the site be evacuated, sending 9,000 inmates on a death march to another Auschwitz subcamp at Gliwice.[65] The plant had almost been ready to commence production.[66] From Gliwice, prisoners were taken by rail in open freight wagons to Buchenwald and Mauthausen concentration camps. The 800 inmates who had been left behind in the Monowitz hospital were liberated on 27 January 1945 by the 1st Ukrainian Front of the Red Army.[67]

After their arrest, the Franks, Van Pels and Fritz Pfeffer were sent by the Gestapo to Westerbork, a holding camp in the northern Netherlands. From there, in September 1944, the group was transported by freight train to the Auschwitz-Birkenau extermination and concentration camp complex in German-occupied Poland. Anne and Margot Frank were spared immediate death in the Auschwitz gas chambers and instead were sent to Bergen-Belsen, a concentration camp in northern Germany. In March 1945, the Frank sisters died of typhus at Bergen-Belsen; their bodies were thrown into a mass grave. Several weeks later, on April 15, 1945, British forces liberated the camp.
Auschwitz was the Nazis' largest concentration and extermination camp. It was founded on Himmler's orders on the 27th of April 1940, close to the small Polish town of Oświęcim. The first inmates - mostly Polish political prisoners - were brought there in June 1940 and were used for slave labour. By March 1941, more than 10 000 prisoners were registered here. The Auschwitz camp was renowned for its harshness, with the most infamous being Block 11 (known as the bunker), where prisoners received the cruellest punishments. In front of it stood the „black wall“, the site of frequent executions. The inscription „Arbeit macht frei!“ above the main gate of the original camp at Auschwitz was merely a cynical mockery.
In Autumn 1943, the camp administration was reorganized following a corruption scandal. By the end of 1943, the prisoner population of Auschwitz main camp, Birkenau, Monowitz and other subcamps was over 80,000: 18,437 in the main camp, 49,114 in Birkenau, and 13,288 at Monowitz where I G Farben had its synthetic rubber plant. Up to 50,000 prisoners were scattered around 51 subcamps such as Rajsko, an experimental agricultural station, and Gleiwitz, a coal mine (see The List of the Camps for a complete list of those subcamps).
In November 2007, the Anne Frank tree—by then infected with a fungal disease affecting the tree trunk—was scheduled to be cut down to prevent it from falling on the surrounding buildings. Dutch economist Arnold Heertje said about the tree: "This is not just any tree. The Anne Frank tree is bound up with the persecution of the Jews."[108] The Tree Foundation, a group of tree conservationists, started a civil case to stop the felling of the horse chestnut, which received international media attention. A Dutch court ordered city officials and conservationists to explore alternatives and come to a solution.[109] The parties built a steel construction that was expected to prolong the life of the tree up to 15 years.[108] However, it was only three years later, on 23 August 2010, that gale-force winds blew down the tree.[110] Eleven saplings from the tree were distributed to museums, schools, parks and Holocaust remembrance centres through a project led by the Anne Frank Center USA. The first sapling was planted in April 2013 at The Children's Museum of Indianapolis. Saplings were also sent to a school in Little Rock, Arkansas, the scene of a desegregation battle; Liberty Park (Manhattan), which honours victims of the September 11 attacks; and other sites in the United States.[111] Another horse chestnut tree honoring Frank was planted in 2010 at Kelly Ingram Park in Birmingham, Alabama.[112]
In the spring of 1941, the SS—along with doctors and officials of the T-4 Euthanasia Program—introduced the Action 14f13 programme meant for extermination of selected concentration camp prisoners.[31] The Inspectorate of the Concentration Camps categorized all files dealing with the death of prisoners as 14f, and those of prisoners sent to the T-4 gas chambers as 14f13. Under the language regulations of the SS, selected prisoners were designated for "special treatment (German: Sonderbehandlung) 14f13". Prisoners were officially selected based on their medical condition; namely, those permanently unfit for labor due to illness. Unofficially, racial and eugenic criteria were used: Jews, the handicapped, and those with criminal or antisocial records were selected.[32]:p.144 For Jewish prisoners there was not even the pretense of a medical examination: the arrest record was listed as a physician's "diagnosis".[32]:pp. 147–148 In early 1943, as the need for labor increased and the gas chambers at Auschwitz became operational, Heinrich Himmler ordered the end of Action 14f13.[32]:p.150
According to Polish historian Andrzej Strzelecki, the evacuation of the prisoners by the SS in January 1945 was one of the camp's "most tragic chapters".[235] In mid-1944, about 130,000 prisoners were in Auschwitz when the SS moved around half of them to other concentration camps.[236] In November 1944, with the Soviet Red Army approaching through Poland, Himmler ordered gassing operations to cease. The crematorium IV building was dismantled,[237] and the Sonderkommando was ordered to remove evidence of the killings, including the mass graves.[238] The SS destroyed written records, and in the final week before the camp's liberation, burned or demolished many of its buildings.[239] The plundered goods from the "Canada" barracks at Birkenau, together with building supplies, were transported to the German interior. On 20 January, the overflowing warehouses were set ablaze. Crematoria II and III at Birkenau were blown up on 20 January and crematorium V six days later, just one day ahead of the Soviet attack.[237]

“There is, of course, all possible types of administration done by the Germans of the time,” Thijs Baynes, the filmmaker behind the project, told the Guardian. “And there is an even bigger circle of circumstantial evidence. What [Dutch Nazi party] members were in the neighborhood? What connections were with the Gestapo? Where were Gestapo agents living?
In April 1940, Rudolph Höss, who become the first commandant, identified the Silesian town of Oswiecim as a possible site for a concentration camp. The function of the camp was initially to intimidate Poles and prevent resistance to German rule. 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'. On April 27th, Himmler ordered construction of the camp.

One could call this a simple mistake, except that it echoed a similar incident the previous year, when visitors noticed a discrepancy in the museum’s audioguide displays. Each audioguide language was represented by a national flag—with the exception of Hebrew, which was represented only by the language’s name in its alphabet. The display was eventually corrected to include the Israeli flag.

Between 1942 and 1944, the SS authorities at Auschwitz established 44 subcamps. Some of them were established within the officially designated “development” zone, including Budy, Rajsko, Tschechowitz, Harmense, and Babitz. Others, such as Blechhammer, Gleiwitz, Althammer, Fürstengrube, Laurahuette, and Eintrachthuette were located in Upper Silesia north and west of the Vistula River. Some subcamps, such as Freudenthal and Bruenn (Brno), were located in Moravia.
The SS gained its independence from the SA in July 1934, in the wake of the Röhm purge. Hitler then authorized SS leader Heinrich Himmler to centralize the administration of the concentration camps and formalize them into a system. Himmler chose SS Lieutenant General Theodor Eicke for this task. Eicke had been the commandant of the SS concentration camp at Dachau since June 1933. Himmler appointed him Inspector of Concentration Camps, a new section of the SS subordinate to the SS Main Office.
Nazism attempted to reconcile conservative, nationalist ideology with a socially radical doctrine. In so doing, it became a profoundly revolutionary movement—albeit a largely negative one. Rejecting rationalism, liberalism, democracy, the rule of law, human rights, and all movements of international cooperation and peace, it stressed instinct, the subordination of the individual to the state, and the necessity of blind and unswerving obedience to leaders appointed from above. It also emphasized the inequality of men and races and the right of the strong to rule the weak; sought to purge or suppress competing political, religious, and social institutions; advanced an ethic of hardness and ferocity; and partly destroyed class distinctions by drawing into the movement misfits and failures from all social classes. Although socialism was traditionally an internationalist creed, the radical wing of Nazism knew that a mass base existed for policies that were simultaneously anticapitalist and nationalist. However, after Hitler secured power, this radical strain was eliminated.
I started looking for work as soon as I arrived, finding a job earning $35 (£23) a week and by 1955 I had opened up my own business in Brooklyn, Queens, as a tailor and I think I did OK. I worked for some dignitaries, including Henry Kissinger and Nancy Reagan, and I also did a lot for the Johnsons. I’d be putting together the garments designed for them by the likes of Oscar de la Renta and Geoffrey Beene.
Spengler's notions of "Prussian socialism" as described in his book Preussentum und Sozialismus ("Prussiandom and Socialism", 1919), influenced Nazism and the Conservative Revolutionary movement.[110] Spengler wrote: "The meaning of socialism is that life is controlled not by the opposition between rich and poor, but by the rank that achievement and talent bestow. That is our freedom, freedom from the economic despotism of the individual".[110] Spengler adopted the anti-English ideas addressed by Plenge and Sombart during World War I that condemned English liberalism and English parliamentarianism while advocating a national socialism that was free from Marxism and that would connect the individual to the state through corporatist organisation.[109] Spengler claimed that socialistic Prussian characteristics existed across Germany, including creativity, discipline, concern for the greater good, productivity and self-sacrifice.[112] He prescribed war as a necessity by saying: "War is the eternal form of higher human existence and states exist for war: they are the expression of the will to war".[113]

In 1938, Otto Frank started a second company, Pectacon, which was a wholesaler of herbs, pickling salts, and mixed spices, used in the production of sausages.[11][12] Hermann van Pels was employed by Pectacon as an advisor about spices. A Jewish butcher, he had fled Osnabrück with his family.[12] In 1939, Edith Frank's mother came to live with the Franks, and remained with them until her death in January 1942.[13]

Jews, especially German, Western European and Russian, also worked as slave labour in work camps in Germany. The Kraft durch Freude Volkswagen works in Wolfsburg, for example, used the “cheap” Jewish slave labourers. A tile work in Sachsenhausen, owned and operated by the SS, used Jews and other slave labourers. In the Harz, near the concentration camp Dora-Mittelbau, Jews worked in an underground weapons factory.

Alternatively, visitors to Auschwitz can use Katowice Airport (IATA: KTW) in Katowice, located 62 km (39 mi) north of the site. Known locally as Pyrzowice Airport, Katowice has direct connections with over 30 destinations across Europe and Asia, with numerous discount, charter, and normal flights in operation. Pyrzowice is a major hub for Wizzair, with additional services provided by Aegean Airlines, Bulgaria Air, El Al, Eurowings, Lufthansa, Ryanair, and TUIfly.
After a fortnight we were able to use the money which we had brought in or was sent to us, and it became possible to complete and improve our diet from the canteen at our own expense. We were lined up in rows exactly in the order of our prison numbers, which had been sewed in black on white on our clothes. (This also is penitentiary procedure, for an inmate of the penitentiary is not an individual any more, but only a numbered being without a name.) Then we were led into the barracks where an S.S. man sitting behind a sort of teller's window disbursed the desired sum, up to fifteen marks a week. Somehow I must have transgressed against the military discipline in this procedure. I presume that I had my cap in the wrong hand. Instead of the money I received a violent blow on the back of my hand with a heavy stick which was lying next to the paymaster on his table, obviously for such purposes. Many weeks after this experience the back of my hand was still painful and swollen.
In “Ravensbrück,” Helm gives a further example of the erratic way the Nazis treated their own regulations, even late in the war. In 1943, Himmler agreed to allow the Red Cross to deliver food parcels to some prisoners in the camps. To send a parcel, however, the Red Cross had to mark it with the name, number, and camp location of the recipient; requests for these details were always refused, so that there was no way to get desperately needed supplies into the camps. Yet when Wanda Hjort, a young Norwegian woman living in Germany, got hold of some prisoners’ names and numbers—thanks to inmates who smuggled the information to her when she visited the camp at Sachsenhausen—she was able to pass them on to the Norwegian Red Cross, whose packages were duly delivered. This game of hide-and-seek with the rules, this combination of hyper-regimentation and anarchy, is what makes Kafka’s “The Trial” seem to foretell the Nazi regime.

In 1920, the Nazi Party officially announced that only persons of "pure Aryan descent [rein arischer Abkunft]" could become party members and if the person had a spouse, the spouse also had to be a "racially pure" Aryan. Party members could not be related either directly or indirectly to a so-called "non-Aryan".[52] Even before it had become legally forbidden by the Nuremberg Laws in 1935, the Nazis banned sexual relations and marriages between party members and Jews.[53] Party members found guilty of Rassenschande ("racial defilement") were persecuted heavily, some members were even sentenced to death.[54]
A parallel system to the main camp in Auschwitz began to operate at the Birkenau camp by 1942. The exception, though, was that the majority of “showers” used to delouse the incoming prisoners proved to be gas chambers. At Birkenau, only about 10 percent of Jewish transports were registered, disinfected, shaven and showered in the “central sauna” before being assigned barracks as opposed to being sent directly to the death chambers.
Returning to Auschwitz is going to be a cold, painful and tearful experience. It is a shadow that has always been with me and I’m hoping that by facing it for one last time at the age of 84 I will be able to live my life more peacefully, but I am extremely anxious. I lost my husband just days ago and I’m hoping I’ll finally be able to release my emotions when I’m there, as I’ve never really been able to cry much about anything. I’m comforted by the thought that there will be strength in numbers and that I’ll be there with perhaps 100 or so other survivors, which makes it easier. I would not go on my own. I appear to be a strong person, but inside I’m really quite fragile.

By early 1934, the focus shifted towards rearmament. By 1935, military expenditures accounted for 73 percent of the government's purchases of goods and services.[267] On 18 October 1936, Hitler named Göring as Plenipotentiary of the Four Year Plan, intended to speed up rearmament.[268] In addition to calling for the rapid construction of steel mills, synthetic rubber plants, and other factories, Göring instituted wage and price controls and restricted the issuance of stock dividends.[251] Large expenditures were made on rearmament in spite of growing deficits.[269] Plans unveiled in late 1938 for massive increases to the navy and air force were impossible to fulfil, as Germany lacked the finances and material resources to build the planned units, as well as the necessary fuel required to keep them running.[270] With the introduction of compulsory military service in 1935, the Reichswehr, which had been limited to 100,000 by the terms of the Versailles Treaty, expanded to 750,000 on active service at the start of World War II, with a million more in the reserve.[271] By January 1939, unemployment was down to 301,800 and it dropped to only 77,500 by September.[272]
Hitler expressed opposition to capitalism, regarding it as having Jewish origins and accusing capitalism of holding nations ransom to the interests of a parasitic cosmopolitan rentier class.[51] He also expressed opposition to communism and egalitarian forms of socialism, arguing that inequality and hierarchy are beneficial to the nation.[52] He believed that communism was invented by the Jews to weaken nations by promoting class struggle.[53] After his rise to power, Hitler took a pragmatic position on economics, accepting private property and allowing capitalist private enterprises to exist so long as they adhered to the goals of the Nazi state, but not tolerating enterprises that he saw as being opposed to the national interest.[37]
From the start of the war, a British blockade on shipments to Germany affected its economy. Germany was particularly dependent on foreign supplies of oil, coal, and grain.[92] Thanks to trade embargoes and the blockade, imports into Germany declined by 80 per cent.[93] To safeguard Swedish iron ore shipments to Germany, Hitler ordered the invasion of Denmark and Norway, which began on 9 April. Denmark fell after less than a day, while most of Norway followed by the end of the month.[94][95] By early June, Germany occupied all of Norway.[96]
After the war, the Allied governments, such as the United States, Britain, and the Soviet Union, held trials for the Nazi leaders. These trials were held in Nuremberg, in Germany. For this reason, these trials were called "the Nuremberg Trials." The Allied leaders accused the Nazi leaders of war crimes and crimes against humanity, including murdering millions of people (in the Holocaust), of starting wars, of conspiracy, and belonging to illegal organizations like the Schutzstaffel (SS). Most Nazi leaders were found guilty by the court, and they were sent to jail or executed by hanging.

Although Nazism is often seen as a reactionary movement, it did not seek a return of Germany to the pre-Weimar monarchy, but instead looked much further back to a mythic halcyon Germany which never existed. It has also been seen – as it was by the German-American scholar Franz Leopold Neumann – as the result of a crisis of capitalism which manifested as a "totalitarian monopoly capitalism". In this view Nazism is a mass movement of the middle class which was in opposition to a mass movement of workers in socialism and its extreme form, Communism.[277] Historian Karl Dietrich Bracher, however, argues that,
The cleansing of mouth and teeth was possible only after a two weeks' stay, when we had access to our money and could buy toothbrushes and tooth paste. The towel situation was deplorable. One towel a week was issued for each inmate, but there was no provision for keeping these towels separately. Not unnaturally skin infections, rashes, and boils were frequent. The barracks were heated by iron stoves, some of which were installed only after our admission to the camp, and we had enjoyed them for but a very short time when a sudden restriction denied us the use of them for one week. It was claimed that in one of the 'Jew barracks' the stove had been lighted at a time when it wasn't allowed.
In most of the camps discovered by the Soviets, almost all the prisoners had already been removed, leaving only a few thousand alive—7,000 inmates were found in Auschwitz, including 180 children who had been experimented on by doctors.[45] Some 60,000 prisoners were discovered at Bergen-Belsen by the British 11th Armoured Division,[46] 13,000 corpses lay unburied, and another 10,000 died from typhus or malnutrition over the following weeks.[47] The British forced the remaining SS guards to gather up the corpses and place them in mass graves.[48]