The twin pairs of gas chambers were numbered II and III, and IV and V. The first opened on March 31, 1943, the last on April 4, 1943. The total area of the gas chambers was 2,255 square meters; the capacity of these crematoria was 4,420 people. Those selected to die were undressed in the undressing room and then pushed into the gas chambers. It took about 20 minutes for all the people to death. In II and III, the killings took place in underground rooms, and the corpses were carried to the five ovens by an electrically operated lift. Before cremation gold teeth and any other valuables, such as rings, were removed from the corpses. In IV and V the gas chambers and ovens were on the same level, but the ovens were so poorly built and the usage was so great that they repeatedly malfunctioned and had to be abandoned. The corpses were finally burned outside, in the open, as in 1943. Jewish sonderkommandos worked the crematoria under SS supervision.
The 15 men present at Wannsee included Adolf Eichmann (head of Jewish affairs for the RSHA and the man who organized the deportation of Jews), Heinrich Müller (head of the Gestapo), and other party leaders and department heads.[256] Thirty copies of the minutes were made. Copy no. 16 was found by American prosecutors in March 1947 in a German Foreign Office folder.[263] Written by Eichmann and stamped "Top Secret", the minutes were written in "euphemistic language" on Heydrich's instructions, according to Eichmann's later testimony.[264] The conference had several purposes. Discussing plans for a "final solution to the Jewish question" ("Endlösung der Judenfrage"), and a "final solution to the Jewish question in Europe" ("Endlösung der europäischen Judenfrage"),[256] it was intended to share information and responsibility, coordinate efforts and policies ("Parallelisierung der Linienführung"), and ensure that authority rested with Heydrich. There was also discussion about whether to include the German Mischlinge (half-Jews).[265] Heydrich told the meeting: "Another possible solution of the problem has now taken the place of emigration, i.e. the evacuation of the Jews to the East, provided that the Fuehrer gives the appropriate approval in advance."[256] He continued:
Birkenau was also home to two so-called family camps.  Inmates from the Czech ‘model ghetto’ Theresienstadt were deported in several transports to Birkenau, where they lived in the ‘family camp’, did not have their heads shaved, were better fed, and were freed from slave labour assignments.  They were also allowed far more freedom to create and continue the cultural production that had been the hallmark of life in Theresienstadt.  As was the case in Theresienstadt, however, this ‘generosity’ was solely for the sake of propaganda, only temporarily delaying the killing.  There was in the family camp a small musical group that was frequently required to play for the SS while they were drinking, as well as during public beatings.  Perhaps the cruellest freedom allowed the Czech camp was the freedom to educate their children.  Lessons were given in reading and counting. There were also singing and recorder lessons, with a focus on Jewish and Czech music.  In two major killing waves of March and July 1944, the Theresienstadt family camp was liquidated.

The last part of an offensive operation was the destruction of un-subdued pockets of resistance, which had been enveloped earlier and by-passed by the fast-moving armoured and motorised spearheads. The Kesselschlacht 'cauldron battle' was a concentric attack on such pockets. It was here that most losses were inflicted upon the enemy, primarily through the mass capture of prisoners and weapons. During Operation Barbarossa, huge encirclements in 1941 produced nearly 3.5 million Soviet prisoners, along with masses of equipment.[66][f]

Notable memoirists of the camp include Primo Levi, Elie Wiesel, and Tadeusz Borowski.[195] Levi's If This is a Man, first published in Italy in 1947 as Se questo è un uomo, became a classic of Holocaust literature, an "imperishable masterpiece".[275][h] Wiesel wrote about his imprisonment at Auschwitz in Night (1960) and other works, and became a prominent spokesman against ethnic violence; in 1986, he was awarded the Nobel Peace Prize.[277] Camp survivor Simone Veil was later elected President of the European Parliament, serving from 1979 to 1982.[278] Two Auschwitz victims—Maximilian Kolbe, a priest who volunteered to die by starvation in place of a stranger, and Edith Stein, a Jewish convert to Catholicism—were later named saints of the Catholic Church.[279]

"...(t)hroughout ( the Polish Campaign), the employment of the mechanized units revealed the idea that they were intended solely to ease the advance and to support the activities of the infantry....Thus, any strategic exploitation of the armored idea was still-born. The paralysis of command and the breakdown of morale were not made the ultimate aim of the ... German ground and air forces, and were only incidental by-products of the traditional maneuvers of rapid encirclement and of the supporting activities of the flying artillery of the Luftwaffe, both of which had has their purpose the physical destruction of the enemy troops. Such was the Vernichtungsgedanke of the Polish campaign."
The site was first suggested as a concentration camp for Polish prisoners by SS-Oberführer Arpad Wigand, an aide to Erich von dem Bach-Zelewski, Higher SS and Police Leader for Silesia. After this part of Poland was annexed by Nazi Germany, Oświęcim (Auschwitz) was located administratively in Germany, in the Province of Upper Silesia, Regierungsbezirk Kattowitz, Landkreis Bielitz. Bach-Zelewski had been searching for a site to hold prisoners in the Silesia region, as the local prisons were filled to capacity. Richard Glücks, head of the Concentration Camps Inspectorate, sent former Sachsenhausen concentration camp commandant Walter Eisfeld to inspect the site, which housed 16 dilapidated one-story buildings that had served as an Austrian and later Polish Army barracks and a camp for transient workers.[3] German citizens were offered tax concessions and other benefits if they would relocate to the area.[33] By October 1943, more than 6,000 Reich Germans had arrived.[34] The Nazis planned to build a model modern residential area for incoming Germans, including schools, playing fields, and other amenities. Some of the plans went forward, including the construction of several hundred apartments, but many were never fully implemented.[35] Basic amenities such as water and sewage disposal were inadequate, and water-borne illnesses were commonplace.[36]
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.
On October 7, 1944, several hundred prisoners assigned to Crematorium IV at Auschwitz-Birkenau rebelled after learning that they were going to be killed. During the uprising, the prisoners killed three guards and blew up the crematorium and adjacent gas chamber. The prisoners used explosives smuggled into the camp by Jewish women who had been assigned to forced labor in a nearby armaments factory.
The British and American governments were reluctant to publicize the intelligence they had received. A BBC Hungarian Service memo, written by Carlile Macartney, a BBC broadcaster and senior Foreign Office adviser on Hungary, stated in 1942: "We shouldn't mention the Jews at all." The British government's view was that the Hungarian people's antisemitism would make them distrust the Allies if Allied broadcasts focused on the Jews.[346] The US government similarly feared turning the war into one about the Jews; antisemitism and isolationism were common in the US before its entry into the war.[347] Although governments and the German public appear to have understood what was happening, it seems the Jews themselves did not. According to Saul Friedländer, "[t]estimonies left by Jews from all over occupied Europe indicate that, in contradistinction to vast segments of surrounding society, the victims did not understand what was ultimately in store for them." In Western Europe, he writes, Jewish communities seem to have failed to piece the information together, while in Eastern Europe, they could not accept that the stories they heard from elsewhere would end up applying to them too.[348]
There are different methods of execution. People are shot by firing squads, killed by an "air hammer", and poisoned by gas in special gas chambers. Prisoners condemned to death by the Gestapo are murdered by the first two methods. The third method, the gas chamber, is employed for those who are ill or incapable of work and those who have been brought in transports especially for the purpose/Soviet prisoners of war, and, recently Jews.[333]

The prisoners put up various forms of resistance to the tyranny of the camp. Resistance organisations helped inmates to obtain medicine and food, documented Nazi crimes, supported attempts to escape and sabotage, tried to put political prisoners into positions of responsibility, and prepared for an uprising. A total of 667 prisoners escaped from Auschwitz, but 270 of them were caught in the vicinity of the camp and immediately executed. The best-known escape was that of two Slovak Jews, Alfred Wetzler and Walter Rosenberg (Rudolf Vrba) (link in Czech). They managed to cross into Slovakia and to tell Jewish leaders - and through them the world - about the terrible reality of Auschwitz, about which they wrote an extensive report. On the 7th of October 1944, there was an uprising by the Sonderkommando working in the gas chambers. The prisoners managed to destroy one of the gas chambers, and thus to hinder the extermination process. All the rebels died. A group of young female prisoners was also executed for having smuggled gunpowder to the rebels from the factory in Monowitz.
Birkenau was the largest camp in the Auschwitz complex. It became primarily a centre for the mass murder of Jews brought there for extermination, and of Roma and Sinti prisoners during its final period. Sick prisoners and those selected for death from the whole Auschwitz complex – and, to a smaller extent, from other camps – were also gathered and systematically killed here. It ultimately became a place for the concentration of prisoners before they were transferred inside the Third Reich to work for German industry. Most of the victims of the Auschwitz complex, probably about 90%, were killed in the Birkenau camp.
At dawn on 10 May, the Germans began an invasion of Belgium and the Netherlands. Accordingly, convinced that they were facing a repeat of the German strategy of 1914, Allied commanders moved the bulk of their forces from the Franco-Belgian border into defensive positions within Belgium to await the continuation of the German attack. In so doing, they fell right into Hitler's trap.
The French battery now opened rapid fire on our wood and at any moment we could expect their fire to be aimed at our tank, which was in full view. I therefore decided to abandon it as fast as I could, taking the crew with me. At that moment the subaltern in command of the tanks escorting the infantry reported himself wounded, with the words: 'Herr General, my left arm has been shot off.' We clamored up through the sandy pit, shells crashing and splintering all round. Close in front of us trundled Rothenburg's tank with flames pouring out of the rear. The adjutant of the Panzer Regiment had also left his tank. I thought at first that the command tank had been set alight by a hit in petrol tank and was extremely worried for Colonel Rothenbttrg's safety. However, it turned out to be only the smoke candles that had caught light, the smoke from which now served us very well. In the meantime Lieutenant Most had driven my armored signals vehicle into the wood, where it had been hit in the engine and now stood immobilized. The crew was unhurt."
With this police infrastructure in place, opponents of the Nazis were terrorized, beaten, or sent to one of the concentration camps the Germans built to incarcerate them. Dachau, just outside of Munich, was the first such camp built for political prisoners. Dachau's purpose changed over time and eventually became another brutal concentration camp for Jews.
When the selection process was complete, a work group of prisoners called the ‘Kanada Kommando’ collected the belongings of victims and took them to the ‘Kanada’ warehouse facility for sorting and transporting back to Germany. To the prisoners, Canada was a country that symbolised wealth. They, therefore, gave the ironic name Kanada (the German spelling of Canada) to the warehouse area as it was full of possessions, clothing and jewellery.
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.
Although effective in quick campaigns against Poland and France, mobile operations could not be sustained by Germany in later years. Strategies based on manoeuvre have the inherent danger of the attacking force overextending its supply lines, and can be defeated by a determined foe who is willing and able to sacrifice territory for time in which to regroup and rearm, as the Soviets did on the Eastern Front (as opposed to, for example, the Dutch who had no territory to sacrifice). Tank and vehicle production was a constant problem for Germany; indeed, late in the war many panzer "divisions" had no more than a few dozen tanks.[75] As the end of the war approached, Germany also experienced critical shortages in fuel and ammunition stocks as a result of Anglo-American strategic bombing and blockade. Although production of Luftwaffe fighter aircraft continued, they would be unable to fly for lack of fuel. What fuel there was went to panzer divisions, and even then they were not able to operate normally. Of those Tiger tanks lost against the United States Army, nearly half of them were abandoned for lack of fuel.[76]
Ultimately, three SS guards were killed—one of whom was burned alive by the prisoners in the oven of Crematorium II[230]—and 451 Sonderkommandos were killed.[232][233] Hundreds of prisoners escaped, but all were soon captured and executed, along with an additional group who had participated in the revolt.[230] Crematorium IV was destroyed in the fighting. A group of prisoners in the gas chamber of Crematorium V was spared in the chaos.[231][230]

Also that November, Schindler was introduced to Itzhak Stern, an accountant for Schindler's fellow Abwehr agent Josef "Sepp" Aue, who had taken over Stern's formerly Jewish-owned place of employment as a Treuhander (trustee).[21] Property belonging to Polish Jews, including their possessions, places of business, and homes were seized by the Germans beginning immediately after the invasion, and Jewish citizens were stripped of their civil rights.[22] Schindler showed Stern the balance sheet of a company he was thinking of acquiring, an enamelware factory called Rekord Ltd[a] owned by a consortium of Jewish businessmen that had filed for bankruptcy earlier that year.[23] Stern advised him that rather than running the company as a trusteeship under the auspices of the Haupttreuhandstelle Ost (Main Trustee Office for the East), he should buy or lease the business, as that would give him more freedom from the dictates of the Nazis, including the freedom to hire more Jews.[24]