About two-thirds of the overall number of victims of the Final Solution were killed before February 1943,[87] which included the main phase of the extermination programme in the West launched by Eichmann on 11 June 1942 from Berlin.[88] The Holocaust trains run by the Deutsche Reichsbahn and several other national railway systems delivered condemned Jewish captives from as far as Belgium, Bulgaria, France, Greece, Hungary, Italy, Moravia, Netherlands, Romania, Slovakia, and even Scandinavia.[89][90] The cremation of exhumed corpses to destroy any evidence left behind began in early spring and continued throughout summer.[91] The nearly completed clandestine programme of murdering all deportees was explicitly addressed by Heinrich Himmler in his Posen speeches made to the leadership of the Nazi Party on 4 October and during the Posen Conference of 6 October 1943 in occupied Poland. Himmler explained why the Nazi leadership found it necessary to kill Jewish women and children along with the Jewish men. The assembled functionaries were told that the Nazi state policy was "the extermination of the Jewish people" as such.[92]
Inside the Soviet Union were an estimated three million Jews, many of whom still lived in tiny isolated villages known as Shtetls. Following behind the invading German armies, four SS special action units known as Einsatzgruppen systematically rounded-up and shot all of the inhabitants of these Shtetls. Einsatz execution squads were aided by German police units, local ethnic Germans, and local anti-Semitic volunteers. Leaders of the Einsatzgruppen also engaged in an informal competition as to which group had the highest tally of murdered Jews.
Concentration camp crematorium being shown to a US soldier  © Organised killing began with the outbreak of war in September 1939, but the first victims were not Jews. The Nazis set about killing people with physical and mental disabilities, whom they regarded as a burden on the state and a threat to the nation's 'racial hygiene'. About 170,000 people were eventually killed under this so-called Euthanasia programme, which also pioneered techniques and employed many of the people later used to kill Jews.

At the end of the war, between 50,000 and 100,000 Jewish survivors were living in three zones of occupation: American, British and Soviet. Within a year, that figure grew to about 200,000. The American zone of occupation contained more than 90 percent of the Jewish displaced persons (DPs). The Jewish DPs would not and could not return to their homes, which brought back such horrible memories and still held the threat of danger from anti-Semitic neighbors. Thus, they languished in DP camps until emigration could be arranged to Palestine, and later Israel, the United States, South America and other countries. The last DP camp closed in 1957 (David S. Wyman, "The United States," in David S. Wyman, ed., The World Reacts to the Holocaust, Baltimore, MD: Johns Hopkins University Press, 1996, pp. 707­10).

By late 1938, the Nazis could claim an impressive series of successes. Germany had staged the 1936 Olympics, annexed Austria and part of Czechoslovakia, and was in the midst of a strong economic recovery fuelled by rearmament. These triumphs had increased the Nazis' popularity and their confidence. President Hindenburg had died and all opposition parties had been abolished. The last conservatives in the cabinet had been replaced by Nazis. The way was clear for radical action.

Keep in mind that when Marr wrote these words, the State of Israel did not exist, nor was there even a hint in the geo-political situation that it might come into being anytime soon. Marr, in speaking of the Jewish national threat, was speaking about the great ideological struggle of Jewish worldview versus paganism, which had been playing out throughout Jewish history. We saw it between the Greeks and the Jews (Part 27) and between the Romans and the Jews (Part 33).
Every day, twins were selected for experimentation. He would require that they give blood and sometimes so much was drawn that a twin would faint. Some underwent huge blood transfusions from one twin to the other. In an attempt to change their eye color, he painfully injected chemicals into their eyes, only to result in infection. One night he collected 7 sets of twins with different colored eyes, killed them, dissected them, and then sent the eyes to von Verschuer for analysis. Twins as young as 5 were killed from experiments, then their bodies dissected. For one pair of twins, he attempted to create conjoined twins by sewing their backs together and trying to connect blood vessels and organs. A few days after the extremely painful process, the twins developed gangrene and died. Many twins had their limbs and organs removed without the use of an anesthetic. Other experiments included isolation endurance, reactions to various stimuli, spinal taps without anesthesia, the removal of sexual organs, and incestuous impregnations. Out of the 1500 twins experimented on by Mengele, only around 200 survived the horror.
But Auschwitz-Birkenau became more than a concentration camp. In the spring of 1942 gas chambers were built at Birkenau and mass transports of Jews began to arrive. Some of the new arrivals were inducted into the camp as registered prisoners, but the great majority were gassed immediately. These gassing operations were greatly expanded in the spring of 1943 with the construction of four purpose-built gas chamber and crematorium complexes, which included such refinements as electric lifts to carry bodies up to the crematoria. Each crematorium could handle 2,000 victims daily. In a nearby group of barracks, nicknamed 'Canada' by the prisoners, victims' belongings were sorted for transportation to the Reich. The victims' hair was used to stuff mattresses; gold teeth were melted down and the gold deposited to an SS account.
The survey of her manuscripts compared an unabridged transcription of Anne Frank's original notebooks with the entries she expanded and clarified on loose paper in a rewritten form and the final edit as it was prepared for the English translation. The investigation revealed that all of the entries in the published version were accurate transcriptions of manuscript entries in Anne Frank's handwriting, and that they represented approximately a third of the material collected for the initial publication. The magnitude of edits to the text is comparable to other historical diaries such as those of Katherine Mansfield, Anaïs Nin and Leo Tolstoy in that the authors revised their diaries after the initial draft, and the material was posthumously edited into a publishable manuscript by their respective executors, only to be superseded in later decades by unexpurgated editions prepared by scholars.[57]
German communists, socialists and trade unionists were among the earliest opponents of the Nazis[443] and among the first to be sent to concentration camps.[444] Before the invasion of the Soviet Union, Hitler issued the Commissar Order, which ordered the execution of all political commissars and Communist Party members captured.[445] Nacht und Nebel ("Night and Fog") was a directive of Hitler in December 1941, resulting in the disappearance of political activists throughout the German-occupied territories.[446]
The photo above was taken while Mengele was home on leave, after spending 5 months at Auschwitz-Birkenau. He is wearing an Iron Cross medal on the pocket of his uniform. Mengele was very proud of his medals; he earned the Iron Cross 2nd Class shortly after he was sent to the Ukraine in June 1941 at the time of the German invasion of the Soviet Union. In January 1942, Mengele joined the prestigious 5th SS Panzer Division, nicknamed the Viking Division. In July 1942, he was awarded the Iron Cross 1st Class after he pulled two wounded soldiers out of a burning tank under enemy fire on the battlefield, and administered medical first aid to them.
“Could the tunnel ever be excavated?” I asked Freund. He told me that the Vilna Gaon Museum, although already planning renovations at the site, was still deciding how to proceed, but that he has counseled against full excavation: He’d invited an architect and tunnel expert named Ken Bensimon to analyze the site, and Bensimon had concluded that even if a rabbi signed off on a dig—a necessity, given the proximity to what amounts to mass graves—the integrity of the passageway would be unlikely to hold.
Hitler was obsessed with the idea of the superiority of the “pure” German race, which he called “Aryan,” and with the need for “Lebensraum,” or living space, for that race to expand. In the decade after he was released from prison, Hitler took advantage of the weakness of his rivals to enhance his party’s status and rise from obscurity to power. On January 30, 1933, he was named chancellor of Germany. After President Paul von Hindenburg’s death in 1934, Hitler anointed himself as “Fuhrer,” becoming Germany’s supreme ruler.
From 1933 onward, anti-Jewish propaganda had flooded Germany. Under the skillful direction of Joseph Goebbels, his Nazi Propaganda Ministry churned out a ceaseless stream of leaflets, posters, newspaper articles, cartoons, newsreels, slides, movies, speeches, records, exhibits and radio pronouncements. As a result, the accusations, denunciations and opinions which Hitler first expressed in his book, Mein Kampf, had become institutionalized, accepted as time-tested beliefs by all Nazis, taught as fact to impressionable youths, and drilled into the minds of eager-to-please SS recruits.

Being a twin, regardless of age, meant survival in 1944. Some 3,000 children (or about 1,500 sets of twins) were selected for the experiments. They were not terrified of him but rather they were often intimidated by some of what he did. They knew of his temper and his passion for his work. Yet, they were also aware of his role in their survival. "Being on Mengele’s list was better than being on no list," said Eva Mozes Kor.
Upon arrival at a camp in mates were stripped of their clothes and shaved of all their body hair. Then they were given a shower, disinfected and given a uniform. each step was used to dehumanize prisoners, both physically and emotionally. Prisoners were then given a number. At Auschwitz the number was tattooed on their arm. Those who the Nazis thought were unable to work were token to what they called showers. The Nazis said to these prisoners who were about to meet their deaths it was to freshen up a bit after their long journey. Instead of water Zyklon B, developed to kill rodents, closed in on them. Death Did not usually come quickly but rather slowly. Most of the walls of the death chambers had scratch marks to show how victims tried to dig themselves out. The purpose of these cams were to kill huge amounts of Jews a day. Camps had been in Germany for years. These were the places  were tons of Jews had been murdered. Once at the camps selected people would work the others were gassed. Before being gassed they forced to march to the sound of music. An important camp was Treblinka. It was established for slave labor In 1941, but in 1942 it became a death camp. By may 1943 the population of Warsaw had been transported to Treblinka and other camps. By July 11, 1944 800,000 Jews had been murdered in Treblinkia. Unlike Treblinkia, Chelmno, Sobibor, and Balzac which were made to kill Jews. Maidanek and Auschwitz had a work camp attached. Upon arrival at these two camps a selection was made. 10% of the new arrivals would escape immediate gassing.   
In response to a typhus epidemic in the women's camp, Mengele cleared one block of six hundred Jewish women and sent them to their deaths in the gas chambers. The building was then cleaned and disinfected, and the occupants of a neighboring block were bathed, de-loused, and given new clothing before being moved into the clean block. This process was repeated until all of the barracks were disinfected. Similar procedures were used for later epidemics of scarlet fever and other diseases, with infected prisoners being killed in the gas chambers. For these actions, Mengele was awarded the War Merit Cross (Second Class with swords) and was promoted in 1944 to First Physician of the Birkenau subcamp.[37]