However, after the Nazis' "Seizure of Power" in 1933, Röhm and the Brown Shirts were not content for the party to simply carry the reigns of power. Instead, they pressed for a continuation of the "National Socialist revolution" to bring about sweeping social changes, which Hitler, primarily for tactical reasons, was not willing to do at that time. He was instead focused on rebuilding the military and reorienting the economy to provide the rearmament necessary for invasion of the countries to the east of Germany, especially Poland and Russia, to get the Lebensraum ("living space") he believed was necessary to the survival of the Aryan race. For this, he needed the co-operation of not only the military, but also the vital organs of capitalism, the banks and big businesses, which he would be unlikely to get if Germany's social and economic structure was being radically overhauled. Röhm's public proclamation that the SA would not allow the "German Revolution" to be halted or undermined caused Hitler to announce that "The revolution is not a permanent condition." The unwillingness of Röhm and the SA to cease their agitation for a "Second Revolution", and the unwarranted fear of a "Röhm putsch" to accomplish it, were factors behind Hitler's purging of the SA leadership in the Night of the Long Knives in July 1934.[281][282]

After the start of World War II, Adolf Hitler (1889-1945), the chancellor of Germany from 1933 to 1945, implemented a policy that came to be known as the “Final Solution.” Hitler was determined not just to isolate Jews in Germany and countries annexed by the Nazis, subjecting them to dehumanizing regulations and random acts of violence. Instead, he became convinced that his “Jewish problem” would be solved only with the elimination of every Jew in his domain, along with artists, educators, Gypsies, communists, homosexuals, the mentally and physically handicapped and others deemed unfit for survival in Nazi Germany.

The invasion conquered a huge area, including the Baltic states, Belarus, and west Ukraine. After the successful Battle of Smolensk in September 1941, Hitler ordered Army Group Centre to halt its advance to Moscow and temporarily divert its Panzer groups to aid in the encirclement of Leningrad and Kiev.[117] This pause provided the Red Army with an opportunity to mobilise fresh reserves. The Moscow offensive, which resumed in October 1941, ended disastrously in December.[118] On 7 December 1941, Japan attacked Pearl Harbor, Hawaii. Four days later, Germany declared war on the United States.[119]
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.
We tried to get out – we’d seen the signs of what was to come, not that we could really have known the full extent of what would happen. My uncle had worked in Palestine in 1917 but had been forced to return to Poland when he got sick. We tried to use the contacts he still had there to escape, but the British (who were in control of it) wouldn’t give us permission to go there. In my mind they carry a lot of the blame for the deaths of many of the Jews – especially the Polish Jews – who perished.
Before Auschwitz became the ultimate symbol of the Holocaust, it was an ordinary Polish town known as Oświęcim, where Jews made their home from the early 16th century until the Holocaust, when most of them were murdered. In the pre-war years, the majority of Oświęcim’s citizens were Jewish, and for generations they raised families here and contributed to a richly textured culture. The Holocaust suddenly ended the vibrant Jewish life of the town.
On 23 March, the parliament passed the Enabling Act of 1933, which gave the cabinet the right to enact laws without the consent of parliament. In effect, this gave Hitler dictatorial powers. Now possessing virtually absolute power, the Nazis established totalitarian control as they abolished labour unions and other political parties and imprisoned their political opponents, first at wilde Lager, improvised camps, then in concentration camps. Nazi Germany had been established, yet the Reichswehr remained impartial. Nazi power over Germany remained virtual, not absolute.
When I returned this past autumn, the hair was a barely differentiated mass of gray, more like wool than human locks. Only the occasional braid signaled the remnants of something unprecedented and awful—the site where the Third Reich perpetrated the largest mass murder in human history. At least 1.1 million people were killed here, most within hours of their arrival.
We lived in a white-painted brick house on Kodur Street in Dej, which had a population of about 15,000, around a quarter of whom were Jewish. I was the youngest of five, and we spoke Yiddish within the community and Hungarian and Romanian outside. We had a garden and backyard, full of plums, peaches, cherries and apples. Among the smells of my childhood were my mother’s goulash and the scent of Shabbat candles. My father was a merchant, a travelling salesman. My mother had the full-time job of keeping the house and family. I remember the lullaby she used to sing me, Schaefeleh, schluf mein tier kind (Sleep well, my precious little child). The synagogue or shul was the centre of communal life, and the centre of my life from three years upwards. I don’t remember any overt antisemitism, just my parents warning me to be inside before dark: “Lest some Christian kids decide they don’t like the look of your sidelocks and pick on you.” I just thought my parents were being overprotective.

Heinrich Himmler's Schutzstaffel (SS) took full control of the police and the concentration camps throughout Germany in 1934–35.[5] Himmler expanded the role of the camps to hold so-called "racially undesirable elements", such as Jews, Gypsies/Romanis/Sintis, Serbs, Poles, disabled people, and criminals.[6][7][8] The number of people in the camps, which had fallen to 7,500, grew again to 21,000 by the start of World War II[9] and peaked at 715,000 in January 1945.[10]