The Holocaust was the systematic, bureaucratic, state-sponsored persecution and murder of six million Jews by the Nazi regime and its collaborators. Holocaust is a word of Greek origin meaning “sacrifice by fire.” The Nazis, who came to power in Germany in January 1933, believed that Germans were “racially superior” and that the Jews, deemed “inferior,” were an alien threat to the so-called German racial community.
In early 1943, the Nazis implemented the liquidation of the Krakow Jewish population and opened up the Plaszow work camp, run by the notoriously sadistic commandant, Amon Göth. Schindler cultivated a relationship with Göth, and whenever any of his workers were threatened with deportation to a concentration camp or execution, Schindler managed to provide a black-market gift or bribe to save their lives.

As the mass shootings continued in Russia, the Germans began to search for new methods of mass murder. This was driven by a need to have a more efficient method than simply shooting millions of victims. Himmler also feared that the mass shootings were causing psychological problems in the SS. His concerns were shared by his subordinates in the field.[251] In December 1939 and January 1940, another method besides shooting was tried. Experimental gas vans equipped with gas cylinders and a sealed compartment were used to kill the disabled and mentally-ill in occupied Poland.[252] Similar vans, but using the exhaust fumes rather than bottled gas, were introduced to the Chełmno extermination camp in December 1941,[253] and some were used in the occupied Soviet Union, for example in smaller clearing actions in the Minsk ghetto.[254] They also were used for murder in Yugoslavia.[255]

Many Jews attempted to flee Germany, and thousands succeeded by immigrating to such countries as Belgium, Czechoslovakia, England, France and Holland. It was much more difficult to get out of Europe. Jews encountered stiff immigration quotas in most of the world's countries. Even if they obtained the necessary documents, they often had to wait months or years before leaving. Many families out of desperation sent their children first.

Guderian's leadership was supported, fostered and institutionalised by his supporters in the Reichswehr General Staff system, which worked the Army to greater and greater levels of capability through massive and systematic Movement Warfare war games in the 1930s. Guderian's book incorporated the work of theorists such as Ludwig Ritter von Eimannsberger, whose book, The Tank War (Der Kampfwagenkrieg) (1934) gained a wide audience in the German army. Another German theorist, Ernst Volckheim, wrote a huge amount on tank and combined arms tactics and was influential to German thinking on the use of armoured formations but his work was not acknowledged in Guderian's writings.[155]

The German view of the Roma as hereditary criminals and "asocials" was reflected in their classification in the concentration camps, where they were usually counted among the asocials and given black triangles to wear.[420] According to Niewyk and Nicosia, at least 130,000 died out of nearly one million in German-occupied Europe.[415] The United States Holocaust Memorial Museum calculates at least 220,000.[421] Ian Hancock, who specializes in Romani history and culture, argues for between 500,000 and 1,500,000.[422] The treatment of the Roma was not consistent across German-occupied territories. Those in France and the Low Countries were subject to restrictions on movement and some confinement to collection camps, while those in Central and Eastern Europe were sent to concentration camps and murdered by soldiers and execution squads.[423] Before being sent to the camps, the Roma were herded into ghettos, including several hundred into the Warsaw Ghetto.[219] Further east, teams of Einsatzgruppen tracked down Romani encampments and murdered the inhabitants on the spot, leaving no records of the victims.[423] After the Germans occupied Hungary, 1,000 Roma were deported to Auschwitz.[424][x]
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.

A symbol of innocence in the movie, the little girl in the red coat who appears during the liquidation of the ghetto in the movie was based on a real person. In the film, the little girl is played by actress Oliwia Dabrowska, who—at the age of three—promised Spielberg that she would not watch the film until she was 18 years old. She allegedly watched the movie when she was 11, breaking her promise, and spent years rejecting the experience. Later, she told the Daily Mail, “I realized I had been part of something I could be proud of. Spielberg was right: I had to grow up to watch the film.”
A major tool of the Nazis' propaganda assault was the weekly Nazi newspaper Der Stürmer (The Attacker). At the bottom of the front page of each issue, in bold letters, the paper proclaimed, "The Jews are our misfortune!" Der Stürmer also regularly featured cartoons of Jews in which they were caricatured as hooked-nosed and ape­like. The influence of the newspaper was far-reaching: by 1938 about a half million copies were distributed weekly.

After examining several sites for a new plant to manufacture Buna-N, a type of synthetic rubber essential to the war effort, the German chemical cartel IG Farben chose a site near the towns of Dwory and Monowice (Monowitz in German), about 7 kilometres (4.3 mi) east of Auschwitz I.[50] Tax exemptions were available to corporations prepared to develop industries in the frontier regions under the Eastern Fiscal Assistance Law, passed in December 1940. The site had good railway connections and access to raw materials.[51] In February 1941, Himmler ordered that the Jewish population of Oświęcim be expelled to make way for skilled laborers; that all Poles able to work remain in the town and work on building the factory; and that Auschwitz prisoners be used in the construction work.[52]
Various other German industrial enterprises, such as Krupp and Siemens-Schuckert, built factories with their own subcamps.[68] There were around 40[69] or 50[70] such camps, 28 of them near industrial plants, each camp holding hundreds or thousands of prisoners.[71] Designated as Aussenlager (external camp), Nebenlager (extension or subcamp), or Arbeitslager (labor camp),[69] camps were built at Blechhammer, Jawiszowice, Jaworzno, Lagisze, Mysłowice, Trzebinia, and centers as far afield as the Protectorate of Bohemia and Moravia in Czechoslovakia.[72][73][74] Industries with satellite camps included coal mines, foundries and other metal works, and chemical plants. Prisoners were also made to work in forestry and farming.[75] Budy, for example, was a farming subcamp where prisoners worked 12-hour days, often in the fields, but sometimes tending animals, cleaning ponds, digging ditches, and making compost. Human ashes from the crematorium were mixed with sod and manure to make the compost.[76] Incidents of sabotage to decrease production took place in several subcamps, including Charlottengrube, Gleiwitz II, and Rajsko.[77]

By the end of the war, Schindler had spent his entire fortune on bribes and black market purchases of supplies for his workers.[80] Virtually destitute, he moved briefly to Regensburg and later Munich, but did not prosper in postwar Germany. In fact, he was reduced to receiving assistance from Jewish organisations.[39] In 1948 he presented a claim for reimbursement of his wartime expenses to the American Jewish Joint Distribution Committee, and received $15,000.[81] He estimated his expenditures at over $1,056,000, including the costs of camp construction, bribes, and expenditures for black market goods, including food.[82] Schindler emigrated to Argentina in 1949, where he tried raising chickens and then nutria, a small animal raised for its fur. When the business went bankrupt in 1958, he left his wife and returned to Germany, where he had a series of unsuccessful business ventures, including a cement factory.[83][84] He declared bankruptcy in 1963 and suffered a heart attack the next year, which led to a month-long stay in hospital.[85] Remaining in contact with many of the Jews he had met during the war, including Stern and Pfefferberg, Schindler survived on donations sent by Schindlerjuden from all over the world.[84][86] He died on 9 October 1974 and is buried in Jerusalem on Mount Zion, the only member of the Nazi Party to be honoured in this way.[39][84] For his work during the war, on 8 May 1962, Yad Vashem invited Schindler to a ceremony during which a carob tree planted in his honor on the Avenue of the Righteous.[87] He and his wife, Emilie, were named Righteous Among the Nations, an award bestowed by the State of Israel on non-Jews who took an active role to rescue Jews during the Holocaust, on 24 June 1993.[88] Other awards include the German Order of Merit (1966).[89]

The first official orchestra to be set up in Birkenau was in the men’s camp in August 1942, when a group of sixteen musicians was brought in from the main Auschwitz orchestra.  Unlike in Auschwitz, in Birkenau Jews were allowed to join.  The first conductor was the Polish prisoner Jan Zaborski, who was replaced a few months later by Franz Kopka.  Of this early period in the orchestra's existence, the Polish-Jewish violinist Szymon Laks recalled that those who could,

After roll call, to the sound of "Arbeitskommandos formieren" ("form work details"), prisoners walked to their place of work, five abreast, to begin a working day that was normally 11 hours long—longer in summer and shorter in winter.[112] A prison orchestra, such as the Women's Orchestra of Auschwitz, was forced to play cheerful music as the workers left the camp. Kapos were responsible for the prisoners' behavior while they worked, as was an SS escort. Much of the work took place outdoors at construction sites, gravel pits, and lumber yards. No rest periods were allowed. One prisoner was assigned to the latrines to measure the time the workers took to empty their bladders and bowels.[111][113]
Germany invaded Norway and Denmark on 9 April 1940, during Operation Weserübung. Denmark was overrun so quickly that there was no time for an organized resistance to form. Consequently, the Danish government stayed in power and the Germans found it easier to work through it. Because of this, few measures were taken against the Danish Jews before 1942.[157] By June 1940 Norway was completely occupied.[158] In late 1940, the country's 1,800 Jews were banned from certain occupations, and in 1941 all Jews had to register their property with the government.[159] On 26 November 1942, 532 Jews were taken by police officers, at four o'clock in the morning, to Oslo harbour, where they boarded a German ship. From Germany they were sent by freight train to Auschwitz. According to Dan Stone, only nine survived the war.[160]

During the Battle of France in 1940, De Gaulle's 4th Armour Division and elements of the British 1st Army Tank Brigade in the British Expeditionary Force both made probing attacks on the German flank, actually pushing into the rear of the advancing armored columns at times (See Battle of Arras (1940) ). This may have been a reason for Hitler to call a halt to the German advance. Those attacks combined with Maxime Weygand's Hedgehog tactic would become the major basis for responding to blitzkrieg attacks in the future: deployment in depth, permitting enemy forces to bypass defensive concentrations, reliance on anti-tank guns, strong force employment on the flanks of the enemy attack, followed by counter-attacks at the base to destroy the enemy advance in detail. Holding the flanks or 'shoulders' of a penetration was essential to channeling the enemy attack, and artillery, properly employed at the shoulders, could take a heavy toll of attackers. While Allied forces in 1940 lacked the experience to successfully develop these strategies, resulting in France's capitulation with heavy losses, they characterized later Allied operations. For example, at the Battle of Kursk the Red Army employed a combination of defense in great depth, extensive minefields, and tenacious defense of breakthrough shoulders. In this way they depleted German combat power even as German forces advanced. In August 1944 at Mortain, stout defense and counterattacks by the US and Canadian armies closed the Falaise Gap. In the Ardennes, a combination of hedgehog defense at Bastogne, St Vith and other locations, and a counterattack by the US 3rd Army were employed.
Dunin-Wasowicz, Krzysztof (1980). "Forced Labor and Sabotage in the Nazi Concentration Camps". In Gutman, Yisrael; Saf, Avital. The Nazi concentration Camps: Structure and Aims, the Image of the Prisoner, the Jews in the Camps: Proceedings of the Fourth Yad Vashem International Historical Conference, Jerusalem, January 1980. Jerusalem: Yad Vashem. pp. 133–142.
Under Laks' more positive leadership, the orchestra began to increase in size again.  His efforts won his musicians easier work assignments and a dispensation not to play outdoors in bad weather.  By the end of 1943, there were about forty members, including many Jews, from France, Germany, Poland, the Netherlands and Greece.  They included Henry Meyer, Louis Bannet, and Jacques Stroumsa.
Throughout the Middle Ages in Europe, Jews were subjected to antisemitism based on Christian theology, which blamed them for killing Jesus. Even after the Reformation, Catholicism and Lutheranism continued to persecute Jews, accusing them of blood libels and subjecting them to pogroms and expulsions.[60][61] The second half of the 19th century saw the emergence in the German empire and Austria-Hungary of the völkisch movement, which was developed by such thinkers as Houston Stewart Chamberlain and Paul de Lagarde. The movement embraced a pseudo-scientific racism that viewed Jews as a race whose members were locked in mortal combat with the Aryan race for world domination.[62] These ideas became commonplace throughout Germany,[63] with the professional classes adopting an ideology that did not see humans as racial equals with equal hereditary value.[64] Although the völkisch parties had support in elections at first, by 1914 they were no longer influential. This did not mean that antisemitism had disappeared; instead it was incorporated into the platforms of several mainstream political parties.[63]

In 1914, German strategic thinking derived from the writings of Carl von Clausewitz (June 1, 1780 – November 16, 1831), Helmuth von Moltke the Elder (26 October 1800 – 24 April 1891) and Alfred von Schlieffen (28 February 1833 – 4 January 1913), who advocated manoeuvre, mass and envelopment to create the conditions for a decisive battle (Vernichtungsschlacht). During the war, officers such as Willy Rohr developed tactics to restore manoeuvre on the battlefield. Specialist light infantry (Sturmtruppen, "storm troops") were to exploit weak spots to make gaps for larger infantry units to advance with heavier weapons and exploit the success, leaving isolated strong points to troops following up. Infiltration tactics were combined with short hurricane artillery bombardments using massed artillery, devised by Colonel Georg Bruchmüller. Attacks relied on speed and surprise rather than on weight of numbers. These tactics met with great success in Operation Michael, the spring offensive of 1918 and restored temporarily the war of movement, once the Allied trench system had been overrun. The German armies pushed on towards Amiens and then Paris, coming within 120 kilometres (75 mi) before supply deficiencies and Allied reinforcements halted the advance.[27] Historian James Corum criticised the German leadership for failing to understand the technical advances of the First World War, having given tank production the lowest priority and having conducted no studies of the machine gun prior to that war.[28]

Höss was succeeded as Auschwitz commandant in November 1943 by SS Obersturmbannführer Arthur Liebehenschel, who served until 15 May 1944. SS Sturmbannführer Richard Baer became commandant of Auschwitz I on 11 May 1944, and SS Obersturmbannführer Fritz Hartjenstein of Auschwitz II from 22 November 1943, followed by SS Obersturmbannführer Josef Kramer from 15 May 1944 until the camp's liquidation in January 1945. Heinrich Schwarz was commandant of Auschwitz III from the point at which it became an autonomous camp in November 1943 until its liquidation.[83]

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]
Having achieved a breakthrough into the enemy's rear areas, German forces attempted to paralyze the enemy's decision making and implementation process. Moving faster than enemy forces, mobile forces exploited weaknesses and acted before opposing forces could formulate a response. Guderian wrote that "Success must be exploited without respite and with every ounce of strength, even by night. The defeated enemy must be given no peace."
German military history had been influenced heavily by Carl von Clausewitz, Alfred von Schlieffen and von Moltke the Elder, who were proponents of maneuver, mass, and envelopment. Their concepts were employed in the successful Franco-Prussian War and attempted "knock-out blow" of the Schlieffen Plan. Following the war, these concepts were modified by the Reichswehr. Its Chief of Staff, Hans von Seeckt, moved doctrine away from what he argued was an excessive focus on encirclement towards one based on speed. Speed gives surprise, surprise allows exploitation if decisions can be reached quickly and mobility gives flexibility and speed. Von Seeckt advocated effecting breakthroughs against the enemy's centre when it was more profitable than encirclement or where encirclement was not practical. Under his command a modern update of the doctrinal system called "Bewegungskrieg" and its associated tactical system called " Auftragstaktik" was developed which resulted in the popularly known blitzkrieg effect. He additionally rejected the notion of mass which von Schlieffen and von Moltke had advocated. While reserves had comprised up to four-tenths of German forces in pre-war campaigns, von Seeckt sought the creation of a small, professional (volunteer) military backed by a defense-oriented militia. In modern warfare, he argued, such a force was more capable of offensive action, faster to ready, and less expensive to equip with more modern weapons. The Reichswehr was forced to adopt a small and professional army quite aside from any German plans, for the Treaty of Versailles limited it to 100,000 men.
Lunch was three quarters of a liter of watery soup at midday, reportedly foul-tasting, with meat in the soup four times a week and vegetables (mostly potatoes and rutabaga) three times. The evening meal was 300 grams of bread, often moldy, part of which the inmates were expected to keep for breakfast the next day, with a tablespoon of cheese or marmalade, or 25 grams of margarine or sausage. Prisoners engaged in hard labor were given extra rations.[114]
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.

This was so awful! How can ANYONE disregard this as DUMB?!? Who the hell ARE you ppl to think of this that way? You weren't there...don't judge it...this is a place of evil and murder. Millions of innocent ppl killed everyday for YEARS!! Anyone who thinks this camp is not worth hearing about..seriously has no LIFE! No HEART! would be considered lowlife..heartless could you... To all who actually CARE about what happened...thank you. We will never forget.....
Blitzkrieg sought decisive actions at all times. To this end, the theory of a schwerpunkt (focal point) developed; it was the point of maximum effort. Panzer and Luftwaffe forces were used only at this point of maximum effort whenever possible. By local success at the schwerpunkt, a small force achieved a breakthrough and gained advantages by fighting in the enemy's rear. It is summarized by Guderian as "Nicht kleckern, klotzen!" ("Don't tickle, smash!")

Schindler first arrived in Kraków in October 1939, on Abwehr business, and took an apartment the following month. Emilie maintained the apartment in Ostrava and visited Oskar in Kraków at least once a week.[18][19] In November 1939, he contacted interior decorator Mila Pfefferberg to decorate his new apartment. Her son, Leopold "Poldek" Pfefferberg, soon became one of his contacts for black market trading. They eventually became lifelong friends.[20]