Early camps, usually without proper infrastructure, sprang up everywhere in Germany after Hitler became Chancellor in January 1933: rising "like mushrooms after the rain", Himmler recollected.[51] These early camps, also called "Wild camps" because some were set up with little supervision from higher authorities, were overseen by Nazi paramilitaries, by political-police forces, and sometimes by local police authorities. They utilized any lockable larger space, for example: engine rooms, brewery floors, storage facilities, cellars, etc.[52]
The Nazi rise to power brought an end to the Weimar Republic, a parliamentary democracy established in Germany after World War I. Following the appointment of Adolf Hitler as chancellor on January 30, 1933, the Nazi state (also referred to as the Third Reich) quickly became a regime in which Germans enjoyed no guaranteed basic rights. After a suspicious fire in the Reichstag (the German Parliament), on February 28, 1933, the government issued a decree which suspended constitutional civil rights and created a state of emergency in which official decrees could be enacted without parliamentary confirmation.
However, this regulation was soon waived and there is ample evidence that full Nazi Party members served in the Wehrmacht in particular after the outbreak of World War II. The Wehrmacht Reserves also saw a high number of senior Nazis enlisting, with Reinhard Heydrich and Fritz Todt joining the Luftwaffe, as well as Karl Hanke who served in the army.
Umbreit, Hans (2003). "Hitler's Europe: The German Sphere of Power". In Kroener, Bernhard; Müller, Rolf-Dieter; Umbreit, Hans. Germany and the Second World War, Vol. 5. Organization and Mobilization in the German Sphere of Power. Part 2: Wartime Administration, Economy, and Manpower Resources, 1942–1944/5. Oxford; New York: Oxford University Press. ISBN 978-0-19-820873-0.

Six million people were unemployed when the Nazis took power in 1933 and by 1937 there were fewer than a million.[263] This was in part due to the removal of women from the workforce.[264] Real wages dropped by 25 percent between 1933 and 1938.[251] After the dissolution of the trade unions in May 1933, their funds were seized and their leadership arrested,[265] including those who attempted to co-operate with the NSDAP.[30] A new organisation, the German Labour Front, was created and placed under NSDAP functionary Robert Ley.[265] The average work week was 43 hours in 1933; by 1939 this increased to 47 hours.[266]
When a mother did not want to be separated from her thirteen-year-old daughter, and bit and scratched the face of the SS man who tried to force her to her assigned line, Mengele drew his gun and shot both the woman and the child. As a blanket punishment, he sent to the gas chamber all people from that transport who had previously been selected for work, with the comment: Away with this shit! 
Despite the horrible conditions, prisoners in Auschwitz managed to resist the Nazis, including some instances of escape and armed resistance. In October 1944, members of the Sonderkommando, who worked in the crematoria, succeeded in killing several SS men and destroying one gas chamber. All of the rebels died, leaving behind diaries that provided authentic documentation of the atrocities committed at Auschwitz.
After 1942, many small subcamps were set up near factories to provide forced labor. IG Farben established a synthetic rubber plant in 1942 at Monowitz concentration camp (Auschwitz III); other camps were set up next to airplane factories, coal mines and rocket propellant plants. Conditions were brutal and prisoners were often sent to the gas chambers or killed on site if they did not work quickly enough.
Then, on January 27, 1945, the Red Army reached the camp. Inside, they found prisoners covered in excrement and starving to death, children who had been used for medical experiments, and other shocking evidence of the Nazis’ crimes. At Birkenau, the guards had failed to destroy some of the storerooms where prisoners’ stolen belongings were stored before being transported back to the Reich. Among the remainingitems were 7.7 tons of human hair, 370,000 men’s suits and 837,000 women’s coats and dresses.
^ Gerda Bormann was concerned by the ratio of racially valuable women that outnumbered men and she thought that the war would make the situation worse in terms of childbirths, so much so that she advocated a law (never realised however) which allowed healthy Aryan men to have two wives. See: Anna Maria Sigmund, Women of the Third Reich (Ontario: NDE, 2000), pp. 17-19.
Even the distinction between guard and prisoner could become blurred. From early on, the S.S. delegated much of the day-to-day control of camp life to chosen prisoners known as Kapos. This system spared the S.S. the need to interact too closely with prisoners, whom they regarded as bearers of filth and disease, and also helped to divide the inmate population against itself. Helm shows that, in Ravensbrück, where the term “Blockova” was used, rather than Kapo, power struggles took place among prisoner factions over who would occupy the Blockova position in each barrack. Political prisoners favored fellow-activists over criminals and “asocials”—a category that included the homeless, the mentally ill, and prostitutes—whom they regarded as practically subhuman. In some cases, Kapos became almost as privileged, as violent, and as hated as the S.S. officers. In Ravensbrück, the most feared Blockova was the Swiss ex-spy Carmen Mory, who was known as the Black Angel. She was in charge of the infirmary, where, Helm writes, she “would lash out at the sick with the whip or her fists.” After the war, she was one of the defendants tried for crimes at Ravensbrück, along with S.S. leaders and doctors. Mory was sentenced to death but managed to commit suicide first.
In June 2016, the Auschwitz-Birkenau museum in the Polish town of Oswiecim re-discovered over 16,000 personal items belonging to victims of Auschwitz-Birkenau that had been lost in 1968. The items were originally discovered in 1967 by archaeologists excavating the concentration camp site, and were placed in 48 cardboard boxes in the Polish Academy of Sciences in Warsaw before being lost due to an anti-Semitic communist regime coming to power in 1968.
There is an exculpatory ease to embracing this “young girl,” whose murder is almost as convenient for her many enthusiastic readers as it was for her persecutors, who found unarmed Jewish children easier to kill off than the Allied infantry. After all, an Anne Frank who lived might have been a bit upset at the Dutch people who, according to the leading theory, turned in her household and received a reward of approximately $1.40 per Jew. An Anne Frank who lived might not have wanted to represent “the children of the world,” particularly since so much of her diary is preoccupied with a desperate plea to be taken seriously—to not be perceived as a child. Most of all, an Anne Frank who lived might have told people about what she saw at Westerbork, Auschwitz and Bergen-Belsen, and people might not have liked what she had to say.
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.

Once Hitler gained control of the government, he directed Nazi Germany’s foreign policy toward undoing the Treaty of Versailles and restoring Germany’s standing in the world. He railed against the treaty’s redrawn map of Europe and argued it denied Germany, Europe’s most populous state, “living space” for its growing population. Although the Treaty of Versailles was explicitly based on the principle of the self-determination of peoples, he pointed out that it had separated Germans from Germans by creating such new postwar states as Austria and Czechoslovakia, where many Germans lived.
When Soviet troops liberated Auschwitz on January 27, 1945, they found these pitiful survivors as well as 836,525 items of women clothing, 348,820 items of men clothing, 43,525 pairs of shoes and vast numbers of toothbrushes, glasses and other personal effects. They found also 460 artificial limbs and seven tons of human hair shaved from Jews before they were murdered. The human hairs were used by the company "Alex Zink" (located in Bavaria) for confection of cloth. This company was paying the human hairs 50 pfennig/kilo.
From German Nazi, a shortening of Nationalsozialist (“National Socialist”) (attested since 1903, as a shortening of national-sozial),[1] since in German the nati- in national /ˌnatsi̯oˈnaːl/ is approximately pronounced Nazi [ˈnäːtsi]; compare Sozi (“socialist”).[1] A homonymic term Nazi was in use before the rise of the NSDAP in Bavaria as a pet name for Ignaz and (by extension from that) a derogatory word for a backwards peasant, which may have influenced[2] the use of that abbreviation by the Nazis' opponents and its avoidance by the Nazis themselves.[1][3]
There was one latrine for thirty to thirty-two thousand women and we were permitted to use it only at certain hours of the day. We stood in line to get in to this tiny building, knee-deep in human excrement. As we all suffered from dysentry, we could barely wait until our turn came, and soiled our ragged clothes, which never came off our bodies, thus adding to the horror of our existence by the terrible smell that surrounded us like a cloud. The latrine consisted of a deep ditch with planks thrown across it at certain intervals. We squatted on those planks like birds perched on a telegraph wire, so close together that we could not help soiling one another.[124]
Persecution of the Catholic Church in Germany followed the Nazi takeover.[417] Hitler moved quickly to eliminate political Catholicism, rounding up functionaries of the Catholic-aligned Bavarian People's Party and Catholic Centre Party, which along with all other non-Nazi political parties ceased to exist by July.[418] The Reichskonkordat (Reich Concordat) treaty with the Vatican was signed in 1933, amid continuing harassment of the church in Germany.[314] The treaty required the regime to honour the independence of Catholic institutions and prohibited clergy from involvement in politics.[419] Hitler routinely disregarded the Concordat, closing all Catholic institutions whose functions were not strictly religious.[420] Clergy, nuns and lay leaders were targeted, with thousands of arrests over the ensuing years, often on trumped-up charges of currency smuggling or immorality.[421] Several Catholic leaders were targeted in the 1934 Night of the Long Knives assassinations.[422][423][424] Most Catholic youth groups refused to dissolve themselves and Hitler Youth leader Baldur von Schirach encouraged members to attack Catholic boys in the streets.[425] Propaganda campaigns claimed the church was corrupt, restrictions were placed on public meetings and Catholic publications faced censorship. Catholic schools were required to reduce religious instruction and crucifixes were removed from state buildings.[426]

Successive Reichsstatthalter decrees between 1933 and 1935 abolished the existing Länder (constituent states) of Germany and replaced them with new administrative divisions, the Gaue, governed by NSDAP leaders (Gauleiters).[199] The change was never fully implemented, as the Länder were still used as administrative divisions for some government departments such as education. This led to a bureaucratic tangle of overlapping jurisdictions and responsibilities typical of the administrative style of the Nazi regime.[200]

The camp Stos first saw, some 20 brick buildings, was a run-down former Polish artillery barrack the Nazis had taken over a few months before. Many Poles followed Stos to Auschwitz; few were as lucky. In its original incarnation as a concentration camp, Auschwitz was designed to work inmates to death. At first, most of the labor helped expand the camp itself; other work, such as gravel mining and farming, earned money for the SS. The Nazis even had a term for it, Vernichtung durch Arbeit (“Destruction through work”). The notorious SS camp supervisor Karl Fritzsch greeted new arrivals with a speech: “You have arrived here not at a sanatorium, but at a German concentration camp, from which the only exit is through the chimney of its crematorium.”
^ Andrew Szanajda "The restoration of justice in postwar Hesse, 1945–1949" p. 25 "In practice, it signified intimidating the public through arbitrary psychological terror, operating like the courts of the Inquisition." "The Sondergerichte had a strong deterrent effect during the first years of their operation, since their rapid and severe sentencing was feared."

Concentration camp, internment centre for political prisoners and members of national or minority groups who are confined for reasons of state security, exploitation, or punishment, usually by executive decree or military order. Persons are placed in such camps often on the basis of identification with a particular ethnic or political group rather than as individuals and without benefit either of indictment or fair trial. Concentration camps are to be distinguished from prisons interning persons lawfully convicted of civil crimes and from prisoner-of-war camps in which captured military personnel are held under the laws of war. They are also to be distinguished from refugee camps or detention and relocation centres for the temporary accommodation of large numbers of displaced persons.

^ 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."[265]
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]