Because they refused to pledge allegiance to the Nazi party or serve in the military, Jehovah's Witnesses were sent to concentration camps, where they were identified by purple triangles and given the option of renouncing their faith and submitting to the state's authority.[447] The United States Holocaust Memorial Museum estimates that between 2,700 and 3,300 were sent to the camps, where 1,400 died;[411] in The Holocaust Encyclopedia (2001), Sybil Milton estimates that 10,000 were sent and 2,500 died.[412] According to German historian Detlef Garbe, "no other religious movement resisted the pressure to conform to National Socialism with comparable unanimity and steadfastness."[448]
Schindler’s most effective tool in this privately conceived rescue campaign was the privileged status his plant enjoyed as a “business essential to the war effort” as accorded him by the Military Armaments Inspectorate in occupied Poland. This not only qualified him to obtain lucrative military contracts, but also enabled him to draw on Jewish workers who were under the jurisdiction of the SS. When his Jewish employees were threatened with deportation to Auschwitz by the SS, he could claim exemptions for them, arguing that their removal would seriously hamper his efforts to keep up production essential to the war effort. He did not balk at falsifying the records, listing children, housewives, and lawyers as expert mechanics and  metalworkers, and, in general, covering up as much as he could for unqualified or temporarily incapacitated workers.
The Auschwitz registry (Hauptbücher) shows that 20,946 Roma were registered prisoners,[145] and another 3,000 are thought to have entered unregistered.[146] On 22 March 1943, one transport of 1,700 Polish Sinti and Roma was gassed on arrival because of illness, as was a second group of 1,035 on 25 May 1943.[145] The SS tried to liquidate the camp on 16 May 1944, but the Roma fought them, armed with knives and iron pipes, and the SS retreated. Shortly after this, the SS removed nearly 2,908 from the family camp to work, and on 2 August 1944 gassed the other 2,897. Ten thousand remain unaccounted for.[147]

Victims usually arrived at the camps by freight train.[278] Almost all arrivals at the Operation Reinhard camps of Treblinka, Sobibór, and Bełżec were sent directly to the gas chambers,[279] with individuals occasionally selected to replace dead workers.[280] At Auschwitz, camp officials usually subjected individuals to selections;[281] about 25%[282] of the new arrivals were selected to work.[281] Those selected for death at all camps were told to undress and hand their valuables to camp workers.[283] They were then herded naked into the gas chambers. To prevent panic, they were told the gas chambers were showers or delousing chambers.[284] The procedure at Chełmno was slightly different. Victims there were placed in a mobile gas van and asphyxiated, while being driven to prepared burial pits in the nearby forests. There the corpses were unloaded and buried.[285]
By August 1944 there were 105,168 prisoners in Auschwitz whilst another 50,000 Jewish prisoners lived in Auschwitz’s satellite camps. The camp’s population grew constantly, despite the high mortality rate caused by exterminations, starvation, hard labor, and contagious diseases. Upon arrival at the platform in Birkenau, Jews were thrown out of their train cars without their belongings and forced to form two lines, men and women separately.
German operational theories were revised after the First World War. The Treaty of Versailles limited the Reichswehr to a maximum of 100,000 men, making impossible the deployment of mass armies. The German General Staff was abolished by the treaty but continued covertly as the Truppenamt (Troop Office), disguised as an administrative body. Committees of veteran staff officers were formed within the Truppenamt to evaluate 57 issues of the war.[29] By the time of the Second World War, their reports had led to doctrinal and training publications, including H. Dv. 487, Führung und Gefecht der verbundenen Waffen (Command and Battle of the Combined Arms), known as das Fug (1921–23) and Truppenführung (1933–34), containing standard procedures for combined-arms warfare. The Reichswehr was influenced by its analysis of pre-war German military thought, in particular infiltration tactics, which at the end of the war had seen some breakthroughs on the Western Front and the manoeuvre warfare which dominated the Eastern Front.
The biblical term shoah (Hebrew: שׁוֹאָה), meaning "destruction", became the standard Hebrew term for the murder of the European Jews, first used in a pamphlet in 1940, Sho'at Yehudei Polin ("Sho'ah of Polish Jews"), published by the United Aid Committee for the Jews in Poland.[11] On 3 October 1941 the cover of the magazine The American Hebrew used the phrase "before the Holocaust", apparently to refer to the situation in France,[12] and in May 1943 The New York Times, discussing the Bermuda Conference, referred to the "hundreds of thousands of European Jews still surviving the Nazi Holocaust".[13] In 1968 the Library of Congress created a new category, "Holocaust, Jewish (1939–1945)".[14] The term was popularized in the United States by the NBC mini-series Holocaust (1978), about a fictional family of German Jews,[15] and in November 1978 the President's Commission on the Holocaust was established.[16] As non-Jewish groups began to include themselves as Holocaust victims too, many Jews chose to use the terms Shoah or Churban instead.[12][g] The Nazis used the phrase "Final Solution to the Jewish Question" (German: die Endlösung der Judenfrage).[18]
The Warsaw Ghetto Uprising was the largest ghetto revolt. Massive deportations (or Aktions) had been held in the ghetto from July to September 1942, emptying the ghetto of the majority of Jews imprisoned there. When the Germans entered the ghetto again in January 1943 to remove several thousand more, small unorganized groups of Jews attacked them. After four days, the Germans withdrew from the ghetto, having deported far fewer people than they had intended. The Nazis reentered the ghetto on April 19, 1943, the eve of Passover, to evacuate the remaining Jews and close the ghetto. The Jews, using homemade bombs and stolen or bartered weapons, resisted and withstood the Germans for 27 days. They fought from bunkers and sewers and evaded capture until the Germans burned the ghetto building by building. By May 16 the ghetto was in ruins and the uprising crushed.
The commander of Auschwitz-Birkenau, Rudolf Höss, stated in his autobiography that in 1941 (no exact date is given) he was summoned to Berlin, where Himmler informed him that Hitler had issued an order to solve the “Jewish Question” for good, and that the order was to be implemented by the SS. “The existing extermination places in the east are unsuited to a large scale, long-term action. I have designated Auschwitz for this purpose,” Himmler said.
Infiltration tactics invented by the German Army during the First World War became the basis for later tactics. German infantry had advanced in small, decentralised groups which bypassed resistance in favour of advancing at weak points and attacking rear-area communications. This was aided by co-ordinated artillery and air bombardments, and followed by larger infantry forces with heavy guns, which destroyed centres of resistance. These concepts formed the basis of the Wehrmacht's tactics during the Second World War.
In March 1941, Himmler ordered a second, larger complex to be built next to the original camp. It was called Auschwitz II - Birkenau. The camp at Birkenau was divided into subsections surrounded by electric fences with barbed wire. During 1943 and 1944 the BIIb section became the location of the „Terezín family camp“. At its summit, Birkenau had over 100 000 inmates. In March 1942, the Auschwitz III camp was set up at nearby Monowitz, also known as Buna Monowitz. German company I.G. Farben set up a synthetic rubber factory there, in which it used the prisoners' slave labour. Auschwitz also had a further 45 auxiliary camps, where prisoners were forced to engage in slave labour, mostly for German companies.
When he learned what had happened, Schindler at first managed to secure the release of the men from the Gross-Rosen camp.  He then proceeded to send his personal German secretary to Auschwitz to negotiate the release of the women. The latter managed to obtain the release of the Jewish women by promising to pay 7 RM daily per worker. This is the only recorded case in the history of the extermination camp that such a large group of people were allowed to leave alive while the gas chambers were still in operation.

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]

In the first phase of World War II in Europe, Germany sought to avoid a long war. Germany's strategy was to defeat its opponents in a series of short campaigns. Germany quickly overran much of Europe and was victorious for more than two years by relying on a new military tactic called the "Blitzkrieg" (lightning war). Blitzkrieg tactics required the concentration of offensive weapons (such as tanks, planes, and artillery) along a narrow front. These forces would drive a breach in enemy defenses, permitting armored tank divisions to penetrate rapidly and roam freely behind enemy lines, causing shock and disorganization among the enemy defenses. German air power prevented the enemy from adequately resupplying or redeploying forces and thereby from sending reinforcements to seal breaches in the front. German forces could in turn encircle opposing troops and force surrender.
Another important correction to the historical record: Itzhak Stern, played in the movie by Ben Kingsley, was actually a composite of a number of people, including Mietek Pemper, who played a crucial role in putting Oskar Schindler in the position to save many people. Pemper had the unfortunate task of being forced to work as the assistant to Amon Goth, the sadistic commandant of the Krakow-Płaszow concentration camp. In that position, Pemper passed along valuable information to Oskar. As the German war effort neared collapse, Pemper told Schindler he needed to expand into armaments because only factories deemed vital to the war effort would be viewed worth saving, along with, it was hoped, the workers in those factories.
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:
In her new book, Not for the Faint of Heart, Ambassador Sherman takes readers inside the world of international diplomacy and into the mind of one of our most effective negotiators―often the only woman in the room. She discusses the core values that have shaped her approach to work and leadership: authenticity, effective use of power and persistence, acceptance of change, and commitment to the team. She shows why good work in her field is so hard to do, and how we can learn to apply core skills of diplomacy to the challenges in our own lives.
Thus although the Nazi 'Final Solution' was one genocide among many, it had features that made it stand out from all the rest as well. Unlike all the others it was bounded neither by space nor by time. It was launched not against a local or regional obstacle, but at a world-enemy seen as operating on a global scale. It was bound to an even larger plan of racial reordering and reconstruction involving further genocidal killing on an almost unimaginable scale, aimed, however, at clearing the way in a particular region – Eastern Europe – for a further struggle against the Jews and those the Nazis regarded as their puppets. It was set in motion by ideologues who saw world history in racial terms. It was, in part, carried out by industrial methods. These things all make it unique.
Uprisings broke out in some extermination camps. The few remaining Jews kept alive to dispose of bodies and sort possessions realised the number of transportees was reducing and they would be next. Civilian uprisings occurred across Poland as mainly young Jews, whose families had already been murdered, began to resist Nazi oppression. With reports of rebellion and mass murder in the British press, the situation in the camps could no longer be be ignored.
March 11, 1946 - Former Auschwitz Kommandant Höss, posing as a farm worker, is arrested by the British. He testifies at Nuremberg, then is later tried in Warsaw, found guilty and hanged at Auschwitz, April 16, 1947, near Crematory I. "History will mark me as the greatest mass murderer of all time," Höss writes while in prison, along with his memoirs about Auschwitz.
By August 1944 there were 105,168 prisoners in Auschwitz whilst another 50,000 Jewish prisoners lived in Auschwitz’s satellite camps. The camp’s population grew constantly, despite the high mortality rate caused by exterminations, starvation, hard labor, and contagious diseases. Upon arrival at the platform in Birkenau, Jews were thrown out of their train cars without their belongings and forced to form two lines, men and women separately.
The Reichswehr and the Red Army began a secret collaboration in the Soviet Union to evade the Treaty of Versailles occupational agent, the Inter-Allied Commission. In 1926, War games and tests were begun at Kazan and Lipetsk. The centres were used to field test aircraft and armoured vehicles up to the battalion level and housed aerial and armoured warfare schools, through which officers were rotated.[50]
Auschwitz, Polish Oświęcim, also called Auschwitz-Birkenau, Nazi Germany’s largest concentration camp and extermination camp. Located near the industrial town of Oświęcim in southern Poland (in a portion of the country that was annexed by Germany at the beginning of World War II), Auschwitz was actually three camps in one: a prison camp, an extermination camp, and a slave-labour camp. As the most lethal of the Nazi extermination camps, Auschwitz has become the emblematic site of the “final solution,” a virtual synonym for the Holocaust. Between 1.1 and 1.5 million people died at Auschwitz; 90 percent of them were Jews. Also among the dead were some 19,000 Roma who were held at the camp until the Nazis gassed them on July 31, 1944—the only other victim group gassed in family units alongside the Jews. The Poles constituted the second largest victim group at Auschwitz, where some 83,000 were killed or died.
On the war's Eastern Front, combat did not bog down into trench warfare. German and Russian armies fought a war of maneuver over thousands of miles, giving the German leadership unique experience which the trench-bound Western Allies did not have. Studies of operations in the East led to the conclusion that small and coordinated forces possessed more combat worth than large, uncoordinated forces.
After the liquidation of the Polish state and its institutions, the fundamental goal of German policy in occupied Poland was the exploitation of material and labor resources, and the removal of the local Polish population and ethnic minorities. This was done through expulsion and systematic extermination. The Polish lands were to be completely germanized, through German settlement in the depopulated area.
Blitzkrieg (German: "lightning war") is a method of fast-moving, air-and-land warfare first used extensively during World War II. German armies invading Poland in 1939 used tanks, armored trucks, self-propelled guns, and dive bombers to break through opposing forces and penetrate far behind their lines. During the invasion of the Low Countries and France in 1940, the German armored columns again used these tactics to shock and disorganize the defenders. On the Allied side, U.S. general George S. Patton exhibited (1944) particular skill in mobile warfare in Europe.

In October 1941, work began on Auschwitz II, or Birkenau, located outside the nearby village of Brzezinka. There the SS later developed a huge concentration camp and extermination complex that included some 300 prison barracks; four large so-called Badeanstalten (German: “bathhouses”), in which prisoners were gassed to death; Leichenkeller (“corpse cellars”), in which their bodies were stored; and Einäscherungsöfen (“cremating ovens”). Another camp (Buna-Monowitz), near the village of Dwory, later called Auschwitz III, became in May 1942 a slave-labour camp supplying workers for the nearby chemical and synthetic-rubber works of IG Farben. In addition, Auschwitz became the nexus of a complex of 45 smaller subcamps in the region, most of which housed slave labourers. During most of the period from 1940 to 1945, the commandant of the central Auschwitz camps was SS-Hauptsturmführer (Capt.) and ultimately SS-Obersturmbannführer (Lieut. Col.) Rudolf Franz Hoess (Höss).

Slovak rabbi Michael Dov Weissmandl was the first to suggest, in May 1944, that the Allies bomb the rails leading to Auschwitz.[224] At one point British Prime Minister Winston Churchill ordered that such a plan be prepared, but he was told that precision bombing the camp to free the prisoners or disrupt the railway was not technically feasible.[225][not in citation given] In 1978, historian David Wyman published an essay in Commentary entitled "Why Auschwitz Was Never Bombed", arguing that the United States Army Air Forces had the capability to attack Auschwitz and should have done so; he expanded his arguments in his book The Abandonment of the Jews: America and the Holocaust 1941–1945 (1984). Wyman argued that, since the IG Farben plant at Auschwitz III had been bombed three times between August and December 1944 by the US Fifteenth Air Force in Italy, it would have been feasible for the other camps or railway lines to be bombed too. Bernard Wasserstein's Britain and the Jews of Europe (1979) and Martin Gilbert's Auschwitz and the Allies (1981) raised similar questions about British inaction.[226] Since the 1990s, other historians have argued that Allied bombing accuracy was not sufficient for Wyman's proposed attack, and that counterfactual history is an inherently problematic endeavor.[227]
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]