The Auschwitz complex was divided in three major camps: Auschwitz I main camp or Stammlager; Auschwitz II, or Birkenau, established on October 8th, 1941 as a 'Vernichtungslager' (extermination camp); Auschwitz III or Monowitz, established on May 31th, 1942 as an 'Arbeitslager' or work camp; also several sub-camps. There were up to seven gas chambers using Zyklon-B poison gas and three crematoria. Auschwitz II included a camp for new arrivals and those to be sent on to labor elsewhere; a Gypsy camp; a family camp; a camp for holding and sorting plundered goods and a women's camp. Auschwitz III provided slave labor for a major industrial plant run by I G Farben for producing synthetic rubber (see Blechhammer). Highest number of inmates, including sub-camps: 155,000. The estimated number of deaths: 2.1 to 2.5 million killed in gas chambers, of whom about 2 million were Jews, and Poles, Gypsies and Soviet POWs. About 330,000 deaths from other causes.
From the first escape on 6 July 1940 of Tadeusz Wiejowski,[215] at least 802 prisoners (757 men and 45 women) tried to escape from the camp, according to Polish historian Henryk Świebocki. He writes that most escapes were attempted from work sites outside the camp.[216][f] Of these, 144 were successful and the fate of 331 is unknown.[217] Four Polish prisoners—Eugeniusz Bendera (a car mechanic at the camp), Kazimierz Piechowski, Stanisław Gustaw Jaster, and a priest, Józef Lempart—escaped successfully on 20 June 1942.[218] After breaking into a warehouse, the four dressed as members of the SS-Totenkopfverbände (the SS units responsible for concentration camps), armed themselves, and stole an SS staff car, which they drove unchallenged through the main gate, greeting several officers with "Heil Hitler!" as they drove past.[219] On 21 July 1944, Polish inmate Jerzy Bielecki dressed in an SS uniform and, using a faked pass, managed to cross the camp's gate with his Jewish girlfriend, Cyla Cybulska (known as Cyla Stawiska), pretending that she was wanted for questioning. Both survived the war. For having saved her, Bielecki was recognized by Yad Vashem as Righteous Among the Nations.[220]
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]
In March 1943, the Krakow ghetto was being liquidated, and all the remaining Jews were being moved to the forced-labor camp of Plaszow, outside Krakow.  Schindler prevailed upon SS-Haupsturmführer Amon Goeth, the brutal camp commandant and a personal drinking companion, to allow him to set up a special sub-camp for his own Jewish workers at the factory site in Zablocie. There he was better able to keep the Jews under relatively tolerable conditions, augmenting their below-subsistence diet with food bought on the black market with his own money. The factory compound was declared out of bounds for the SS guards who kept watch over the sub-camp.
Guderian argued that the tank would be the decisive weapon of the next war. "If the tanks succeed, then victory follows", he wrote. In an article addressed to critics of tank warfare, he wrote "until our critics can produce some new and better method of making a successful land attack other than self-massacre, we shall continue to maintain our beliefs that tanks—properly employed, needless to say—are today the best means available for land attack." Addressing the faster rate at which defenders could reinforce an area than attackers could penetrate it during the First World War, Guderian wrote that "since reserve forces will now be motorized, the building up of new defensive fronts is easier than it used to be; the chances of an offensive based on the timetable of artillery and infantry co-operation are, as a result, even slighter today than they were in the last war." He continued, "We believe that by attacking with tanks we can achieve a higher rate of movement than has been hitherto obtainable, and—what is perhaps even more important—that we can keep moving once a breakthrough has been made."[154][l] Guderian additionally required that tactical radios be widely used to facilitate coordination and command by having one installed in all tanks.
Rzepliñski, Andrzej (25 March 2004). "Prosecution of Nazi Crimes in Poland in 1939–2004" (PDF). First International Expert Meeting on War Crimes, Genocide, and Crimes against Humanity. Lyon, France: International Criminal Police Organization – Interpol General Secretariat. Archived from the original (PDF) on 3 March 2016. Retrieved 31 December 2014.
^ In The Drowned and the Saved (1986), Levi wrote that the concentration camps represented the epitome of the totalitarian system: "[N]ever has there existed a state that was really "totalitarian" ... Never has some form of reaction, a corrective of the total tyranny, been lacking, not even in the Third Reich or Stalin's Soviet Union: in both cases, public opinion, the magistrature, the foreign press, the churches, the feeling for justice and humanity that ten or twenty years of tyranny were not enough to eradicate, have to a greater or lesser extent acted as a brake. Only in the Lager [camp] was the restraint from below nonexistent, and the power of these small satraps absolute."[276]
On the evening of November 9, 1938, carefully orchestrated anti-Jewish violence “erupted” throughout the Reich, which since March had included Austria. Over the next 48 hours rioters burned or damaged more than 1,000 synagogues and ransacked and broke the windows of more than 7,500 businesses. Some 30,000 Jewish men between the ages of 16 and 60 were arrested and sent to concentration camps. Police stood by as the violence—often the action of neighbours, not strangers—occurred. Firemen were present not to protect the synagogues but to ensure that the flames did not spread to adjacent “Aryan” property. The pogrom was given a quaint name: Kristallnacht (“Crystal Night,” or “Night of Broken Glass”). In its aftermath, Jews lost the illusion that they had a future in Germany.
The ideology of Nazism brought together elements of antisemitism, racial hygiene and eugenics, and combined them with pan-Germanism and territorial expansionism with the goal of obtaining more Lebensraum (living space) for the Germanic people.[8] Immediately after the Nazi seizure of power in Germany, boycotts of German Jews and acts of violence against them became ubiquitous,[9] and legislation was passed excluding them from the civil service and certain professions, including the law.[10][a] Harassment and economic pressure were used to encourage them to leave Germany; their businesses were denied access to markets, forbidden to advertise in newspapers, and deprived of government contracts.[11]

Recognising that battlefield conditions changed rapidly and that orders often became overtaken by events, the German army encouraged its commanders to make decisions without waiting for orders from above, thus allowing them to take advantage of fleeting opportunities as they arose. Above all else, this doctrine created aggressive and flexible leaders.

^ In his testimony, according to Polish historian Aleksander Lasik, "Höss neither protected anyone nor evaded his own responsibility. His stance came as a surprise to many, especially those who viewed him as a bloodthirsty beast. Instead, he viewed his crimes in terms of the technical obstacles and challenges with which he had to cope. Höss stated that he led the killings in Auschwitz on express orders of Reichsführer Himmler."[264]
Several SS personnel oversaw the killings at each gas chamber, while the bulk of the work was done by the mostly Jewish prisoners known as Sonderkommandos (special squads).[91][92] Hungarian doctor Miklós Nyiszli reported that the Sonderkommando numbered around 860 prisoners when the Hungarian Jews were being killed in May–July 1944.[93] Their responsibilities included removing goods and corpses from the incoming trains, guiding victims to the dressing rooms and gas chambers, and working in the "Canada" barracks, where the victims' possessions were stored.[94] Housed separately from other prisoners, in somewhat better conditions, their quality of life was further improved by access to the goods taken from murdered prisoners, which they were sometimes able to steal and trade on Auschwitz's black market.[95] Many Sonderkommandos committed suicide in response to the horrors of their work; others were generally shot by the SS in a matter of weeks. New Sonderkommando units were formed from incoming transports. Almost none of the 2,000 prisoners placed in these units survived to the camp's liberation.[96]
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.
On January 20, 1942, Reinhard Heydrich convened the Wannsee Conference at a lakeside villa in Berlin to organize the “final solution to the Jewish question.” Around the table were 15 men representing government agencies necessary to implement so bold and sweeping a policy. The language of the meeting was clear, but the meeting notes were circumspect:
Directive control was a fast and flexible method of command. Rather than receiving an explicit order, a commander would be told of his superior's intent and the role which his unit was to fill in this concept. The exact method of execution was then a matter for the low-level commander to determine as best fit the situation. Staff burden was reduced at the top and spread among commands more knowledgeable about their own situation. In addition, the encouragement of initiative at all levels aided implementation. As a result, significant decisions could be effected quickly and either verbally or with written orders a few pages in length.
On January 20, 1942, several top officials of the German government met to officially coordinate the military and civilian administrative branches of the Nazi system to organize a system of mass murder of the Jews. This meeting, called the Wannsee Conference, "marked the beinning of the full-scale, comprehensive extermination operation [of the Jews] and laid the foundations for its organization, which started immediately after the conference ended" (Yahil, The Holocaust, p. 318).
As Nazi tyranny spread across Europe, the Germans and their collaborators persecuted and murdered millions of other people. Between two and three million Soviet prisoners of war were murdered or died of starvation, disease, neglect, or brutal treatment. The Germans targeted the non-Jewish Polish intelligentsia for killing, and deported millions of Polish and Soviet civilians for forced labor in Germany or in occupied Poland, where these individuals worked and often died under deplorable conditions.
Use of bunkers I and 2 stopped in spring 1943 when the new crematoria were built, although bunker 2 became operational again in May 1944 for the murder of the Hungarian Jews.[47] Crematorium II, which had been designed as a mortuary with morgues in the basement and ground-level incinerators, was converted by installing gas-tight doors, vents for the Zyklon B to be dropped into the chamber, and ventilation equipment to remove the gas thereafter.[48] It went into operation in March 1943. Crematorium III was built using the same design. Crematoria IV and V, designed from the start as gassing centers, were also constructed that spring. By June 1943, all four crematoria were operational. Most of the victims were killed using these four structures.[49]
On 25 November 1947, the Auschwitz trial began in Kraków, when Poland's Supreme National Tribunal brought to court 40 former Auschwitz staff. The trial's defendants included commandant Arthur Liebehenschel, women's camp leader Maria Mandel, and camp leader Hans Aumeier. The trials ended on 22 December 1947, with 23 death sentences, 7 life sentences, and 9 prison sentences ranging from three to fifteen years. Hans Münch, an SS doctor who had several former prisoners testify on his behalf, was the only person to be acquitted.[267]
The influence of air forces over forces on the ground changed significantly over the course of the Second World War. Early German successes were conducted when Allied aircraft could not make a significant impact on the battlefield. In May 1940, there was near parity in numbers of aircraft between the Luftwaffe and the Allies, but the Luftwaffe had been developed to support Germany's ground forces, had liaison officers with the mobile formations, and operated a higher number of sorties per aircraft.[71] In addition, German air parity or superiority allowed the unencumbered movement of ground forces, their unhindered assembly into concentrated attack formations, aerial reconnaissance, aerial resupply of fast moving formations and close air support at the point of attack.[citation needed] The Allied air forces had no close air support aircraft, training or doctrine.[71] The Allies flew 434 French and 160 British sorties a day but methods of attacking ground targets had yet to be developed; therefore Allied aircraft caused negligible damage. Against these 600 sorties the Luftwaffe on average flew 1,500 sorties a day.[72] On May 13, Fliegerkorps VIII flew 1,000 sorties in support of the crossing of the Meuse. The following day the Allies made repeated attempts to destroy the German pontoon bridges, but German fighter aircraft, ground fire and Luftwaffe flak batteries with the panzer forces destroyed 56 percent of the attacking Allied aircraft while the bridges remained intact.[73]
Driving from Kraków takes about one hour and you have to leave the A4 motorway at the Oświęcim/Balin exit. There is a big parking lot in Auschwitz I that costs 8 zł for the whole day. 200 metres from Auschwitz II there is another parking lot that costs 2 zł per hour, but also free space for around 40 cars near the main door. As of 2017, it is possible to find legal free parking within 1 km from Auschwitz I.
As was the case in other camps, the primary form of voluntary music-making in Birkenau was singing.  Due to its size and international composition, there were inmates from all over Europe whose voices survivors remembered.  Prisoners sang to comfort one another, to build solidarity and to express resistance.  The former inmate Kitty Hart remembered that

In addition to workers, Schindler moved 250 wagon loads of machinery and raw materials to the new factory.[68] Few if any useful artillery shells were produced at the plant. When officials from the Armaments Ministry questioned the factory's low output, Schindler bought finished goods on the black market and resold them as his own.[69] The rations provided by the SS were insufficient to meet the needs of the workers, so Schindler spent most of his time in Kraków, obtaining food, armaments, and other materials. His wife Emilie remained in Brünnlitz, surreptitiously obtaining additional rations and caring for the workers' health and other basic needs.[70][71] Schindler also arranged for the transfer of as many as 3,000 Jewish women out of Auschwitz to small textiles plants in the Sudetenland in an effort to increase their chances of surviving the war.[72][73]