Before beginning Jewish exterminations, though, the Nazi’s used the Soviet POWs at the Auschwitz camp in trials of the poison gas Zyklon-B, produced by the German company “Degesch” (Deutsche Gesellschaft zur Schädlingsbekämpfung), which was marked as the best way to kill many people at once. The POWs were gassed in underground cells in Block 11, the so called “Death Block,” and following these trials, one gas chamber was setup just outside the main camp and two temporary gas chambers were opened at Birkenau.

Initially the new facilities were "underutilized". From April 1943 to March 1944, "only" 160,000 Jews were killed at Birkenau, but from March 1944 to November 1944, when all the other death camps had been abandoned, Birkenau surpassed all previous records for mass killing. The Hungarian deportations and the liquidation of the remaining Polish ghettos, such as Lodz, resulted in the gassing of 585,000 Jews. This period made Auschwitz-Birkenau into the most notorious killing site of all time.

But individual deaths, by sickness or violence, were not enough to keep the number of prisoners within manageable limits. Accordingly, in early 1941 Himmler decided to begin the mass murder of prisoners in gas chambers, building on a program that the Nazis had developed earlier for euthanizing the disabled. Here, again, the camps’ sinister combination of bureaucratic rationalism and anarchic violence was on display. During the following months, teams of S.S. doctors visited the major camps in turn, inspecting prisoners in order to select the “infirm” for gassing. Everything was done with an appearance of medical rigor. The doctors filled out a form for each inmate, with headings for “Diagnosis” and “Incurable Physical Ailments.” But it was all mere theatre. Helm’s description of the visit of Dr. Friedrich Mennecke to Ravensbrück, in November, 1941, shows that inspections of prisoners—whom he referred to in letters home as “forms” or “portions”—were cursory at best, with the victims parading naked in front of the doctors at a distance of twenty feet. (Jewish prisoners were automatically “selected,” without an examination.) In one letter, Mennecke brags of having disposed of fifty-six “forms” before noon. Those selected were taken to an undisclosed location for gassing; their fate became clear to the remaining Ravensbrück prisoners when the dead women’s clothes and personal effects arrived back at the camp by truck.
Auschwitz originally was conceived as a concentration camp, to be used as a detention center for the many Polish citizens arrested after Germany annexed the country in 1939. These detainees included anti-Nazi activists, politicians, resistance members and luminaries from the cultural and scientific communities. Once Hitler’s Final Solution became official Nazi policy, however, Auschwitz was deemed an ideal death camp locale. For one thing, it was situated near the center of all German-occupied countries on the European continent. For another, it was in close proximity to the string of rail lines used to transport detainees to the network of Nazi camps.
Between 1939 and 1945, the Nazi Party led regime, assisted by collaborationist governments and recruits from occupied countries, was responsible for the deaths of at least eleven million people,[94][95] including 5.5 to 6 million Jews (representing two-thirds of the Jewish population of Europe),[11][96][97] and between 200,000 and 1,500,000 Romani people.[98][99] The estimated total number includes the killing of nearly two million non-Jewish Poles,[100] over three million Soviet prisoners of war,[101] communists, and other political opponents, homosexuals, the physically and mentally disabled.[102][103]
For the purpose of centralisation in the Gleichschaltung process a rigidly hierarchal structure was established in the Nazi Party, which it later carried through in the whole of Germany in order to consolidate total power under the person of Hitler (Führerstaat). It was regionally sub-divided into a number of Gaue (singular: Gau) headed by a Gauleiter, who received their orders directly from Hitler. The name (originally a term for sub-regions of the Holy Roman Empire headed by a Gaugraf) for these new provincial structures was deliberately chosen because of its mediaeval connotations. The term is approximately equivalent to the English shire.
The Nazis later issued similar regulations against the Eastern Workers (Ost-Arbeiters), including the imposition of the death penalty if they engaged in sexual relations with German persons.[194] Heydrich issued a decree on 20 February 1942 which declared that sexual intercourse between a German woman and a Russian worker or prisoner of war would result in the Russian man being punished with the death penalty.[195] Another decree issued by Himmler on 7 December 1942 stated that any "unauthorised sexual intercourse" would result in the death penalty.[196] Because the Law for the Protection of German Blood and German Honour did not permit capital punishment for race defilement, special courts were convened in order to allow the death penalty to be imposed in some cases.[197] German women accused of race defilement were marched through the streets with their head shaven and placards detailing their crimes were placed around their necks[198] and those convicted of race defilement were sent to concentration camps.[190] When Himmler reportedly asked Hitler what the punishment should be for German girls and German women who were found guilty of race defilement with prisoners of war (POWs), he ordered that "every POW who has relations with a German girl or a German would be shot" and the German woman should be publicly humiliated by "having her hair shorn and being sent to a concentration camp".[199]
There is, however, a publication that Schneidermann, eighty years later, believes achieved the right balance: the Jewish Telegraphic Agency. Founded, in 1917, by an Austrian Jewish journalist, the J.T.A., in Schneidermann’s view, is to be admired for its professionalism and conscientiousness. Before 1942, many of the sources about Jewish persecution in Europe were themselves Jewish; according to Schneidermann, while the Times largely dismissed these sources as insufficiently “neutral,” the J.T.A. was willing, with appropriate caution, to use their information in its reporting. At the time, however, the J.T.A. itself was considered biased—and, therefore, not a trustworthy source of information about the fate of Jews in Europe. Similarly, in French media, Schneidermann feels that the only outlet whose coverage did justice to the magnitude of what it was witnessing was L’Humanité, the paper of the French Communist Party, which decried the Nazis’ barbaric persecution of Hitler’s political opponents and repeatedly called for international intervention.

For the preservation staff, the burden of remembrance informs every aspect of their restoration efforts. “If there’s damage to an object as part of its history, we leave it that way,” Banas says. She points to crates of shoes stacked in a hallway, most with worn insoles and uneven heels—signs of human use that will be left as they are. The International Auschwitz Council—museum officials and survivors from around the world dedicated to the conservation of Auschwitz—has decided that the mounds of hair will be allowed to decay naturally because they are human remains.
The chief of construction of Auschwitz II-Birkenau was Karl Bischoff, a competent and dynamic bureaucrat who, in spite of the ongoing war, carried out the construction deemed necessary. The Birkenau camp, the four crematoria, a new reception building, and hundreds of other buildings were planned and constructed.[42] Bischoff's plans, based on an initial budget of RM 8.9 million, called for each barracks to hold 550 prisoners. He later changed this to 744 per barracks, which meant the camp could hold 125,000, rather than 97,000.[43] The SS designed the barracks not so much to house people as to destroy them.[42] There were 174 barracks, each measuring 116 by 36 ft, divided into 62 bays of 43 sq. ft. The bays were divided into "roosts", initially for three inmates and later for four. With personal space of 11 sq. ft to sleep and place whatever belongings they had, inmates were deprived, Robert-Jan van Pelt wrote, "of the minimum space needed to exist".[44]
Ultimately, three SS guards were killed—one of whom was burned alive by the prisoners in the oven of Crematorium II[231]—and 451 Sonderkommandos were killed.[233][234] Hundreds of prisoners escaped, but all were soon captured and executed, along with an additional group who had participated in the revolt.[231] Crematorium IV was destroyed in the fighting. A group of prisoners in the gas chamber of Crematorium V was spared in the chaos.[232][231]
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]
In January 1945, as the Soviet army entered Krakow, the Germans ordered that Auschwitz be abandoned. Before the end of the month, in what came to be known as the Auschwitz death marches, an estimated 60,000 detainees, accompanied by Nazi guards, departed the camp and were forced to march to the Polish towns of Gliwice or Wodzislaw, some 30 miles away. Countless prisoners died during this process; those who made it to the sites were sent on trains to concentration camps in Germany.
Some of the most notorious slave labour camps included a network of subcamps. Gross-Rosen had 100 subcamps,[37] Auschwitz had 44 subcamps,[38][38][39] Stutthof had 40 sub-camps set up contingently.[40] Prisoners in these subcamps were dying from starvation, untreated disease and summary executions by the tens of thousands already since the beginning of war.[41]

Though the Russians had just come across the Holocaust’s deadliest camp, the liberation of Auschwitz didn’t even make front page news. A communiquépublished in the New York Times on January 28, 1945, doesn’t even mention the camp, just the city; on February 3, the paper devotedtwo paragraphs to the “murder factory” at Oswiecim but gave few details. As World War II raced to its end, few people could even grasp the horror that was found in the camps.

A Nazi era school textbook for German students entitled Heredity and Racial Biology for Students written by Jakob Graf described to students the Nazi conception of the Aryan race in a section titled "The Aryan: The Creative Force in Human History".[136] Graf claimed that the original Aryans developed from Nordic peoples who invaded ancient India and launched the initial development of Aryan culture there that later spread to ancient Persia and he claimed that the Aryan presence in Persia was what was responsible for its development into an empire.[136] He claimed that ancient Greek culture was developed by Nordic peoples due to paintings of the time which showed Greeks who were tall, light-skinned, light-eyed, blond-haired people.[136] He said that the Roman Empire was developed by the Italics who were related to the Celts who were also a Nordic people.[136] He believed that the vanishing of the Nordic component of the populations in Greece and Rome led to their downfall.[136] The Renaissance was claimed to have developed in the Western Roman Empire because of the Germanic invasions that brought new Nordic blood to the Empire's lands, such as the presence of Nordic blood in the Lombards (referred to as Longobards in the book); that remnants of the western Goths were responsible for the creation of the Spanish Empire; and that the heritage of the Franks, Goths and Germanic peoples in France was what was responsible for its rise as a major power.[136] He claimed that the rise of the Russian Empire was due to its leadership by people of Norman descent.[136] He described the rise of Anglo-Saxon societies in North America, South Africa and Australia as being the result of the Nordic heritage of Anglo-Saxons.[136] He concluded these points by saying: "Everywhere Nordic creative power has built mighty empires with high-minded ideas, and to this very day Aryan languages and cultural values are spread over a large part of the world, though the creative Nordic blood has long since vanished in many places".[136]

When the women arrived to the factory in Brunnlitz, weak, hungry, frostbitten, less than human, Oskar Schindler met them in the courtyard. They never forgot the sight of Schindler standing in the doorway. And they never forgot his raspy voice when he - surrounded by SS guards - gave them an unforgettable guarantee: 'Now you are finally with me, you are safe now. Don't be afraid of anything. You don't have to worry anymore.'

A beloved classic since its initial publication in 1947, this vivid, insightful journal is a fitting memorial to the gifted Jewish teenager who died at Bergen-Belsen, Germany, in 1945. Born in 1929, Anne Frank received a blank diary on her 13th birthday, just weeks before she and her family went into hiding in Nazi-occupied Amsterdam. Her marvelously detailed, engagingly personal entries chronicle 25 trying months of claustrophobic, quarrelsome intimacy with her parents, sister, a second family, and a middle-aged dentist who has little tolerance for Anne's vivacity. The diary's universal appeal stems from its riveting blend of the grubby particulars of life during wartime (scant, bad food; shabby, outgrown clothes that can't be replaced; constant fear of discovery) and candid discussion of emotions familiar to every adolescent (everyone criticizes me, no one sees my real nature, when will I be loved?). Yet Frank was no ordinary teen: the later entries reveal a sense of compassion and a spiritual depth remarkable in a girl barely 15. Her death epitomizes the madness of the Holocaust, but for the millions who meet Anne through her diary, it is also a very individual loss. --Wendy Smith
Before he joined the Bavarian Army to fight in World War I, Hitler had lived a bohemian lifestyle as a petty street watercolour artist in Vienna and Munich and he maintained elements of this lifestyle later on, going to bed very late and rising in the afternoon, even after he became Chancellor and then Führer.[47] After the war, his battalion was absorbed by the Bavarian Soviet Republic from 1918 to 1919, where he was elected Deputy Battalion Representative. According to historian Thomas Weber, Hitler attended the funeral of communist Kurt Eisner (a German Jew), wearing a black mourning armband on one arm and a red communist armband on the other,[48] which he took as evidence that Hitler's political beliefs had not yet solidified.[48] In Mein Kampf, Hitler never mentioned any service with the Bavarian Soviet Republic and he stated that he became an antisemite in 1913 during his years in Vienna. This statement has been disputed by the contention that he was not an antisemite at that time,[49] even though it is well established that he read many antisemitic tracts and journals during time and admired Karl Lueger, the antisemitic mayor of Vienna.[50] Hitler altered his political views in response to the signing of the Treaty of Versailles in June 1919 and it was then that he became an antisemitic, German nationalist.[49]

Agrarian policies were also important to the Nazis since they corresponded not just to the economy but to their geopolitical conception of Lebensraum as well. For Hitler, the acquisition of land and soil was requisite in moulding the German economy.[233] To tie farmers to their land, selling agricultural land was prohibited.[234] Farm ownership remained private, but business monopoly rights were granted to marketing boards to control production and prices with a quota system.[235] The "Hereditary Farm Law of 1933" established a cartel structure under a government body known as the Reichsnährstand (RNST) which determined "everything from what seeds and fertilizers were used to how land was inherited".[236]
As the government and military began to collapse within Germany, Nazi officials in both Germany and occupied Poland began to think about their endgame. In November 1944, Heinrich Himmler, head of the SS and one of the architects of the Holocaust, issued an abruptorder to destroy the gas chambers at Auschwitz-Birkenau, the largest of Auschwitz’s three main camps. Historians disagree on why he issued the command, which was in direct opposition to a previous order by Adolf Hitler to destroy the remaining Jews in Europe.
None of the categories are independent - one could classify many camps as a mixture of several of the above. All camps had some of the elements of an extermination camp, but systematic extermination of new arrivals by gas chambers only occurred in specialized camps. These were extermination camps, where all new-arrivals were simply killed—the "Aktion Reinhard" camps (Treblinka, Sobibór and Belzec), together with Chelmno. Two others ( Auschwitz and Majdanek) operated as combined concentration- and extermination-camps. Others like Maly Trostenets were at times classified[by whom?] as "minor extermination camps".[50]