Inside the sealed-off ghettos, the Nazis reduced food rations to starvation level, an experience described by Sara Grossman, confined at age 21 in the Lodz ghetto: "I don't think anything hurts as much as hunger. You become wild. You are not responsible for what you say and what you do. You become an animal in the full meaning of the word. You prey on others. You will steal. That is what hunger does to us. It dehumanizes you. You're not a human being any more. Slowly, slowly the Germans were achieving their goal. I think they let us suffer from hunger, not because there was not enough food, but because this was their method of demoralizing us, of degrading us, of torturing us. These were their methods, and they implemented these methods scrupulously. Therefore we had very many, many deaths daily. Very many sick people for whom there was no medication, no help, no remedy. We just stayed there, and lay there, and the end was coming."
People in Tokyo were not united. I felt it silly to deal with them. So, I made up my mind not to wait for their reply. I knew that somebody would surely complain about me in the future. But, I myself thought this would be the right thing to do. There is nothing wrong in saving many people's lives .... The spirit of humanity, philanthropy ... neighborly friendship ... with this spirit, I ventured to do what I did, confronting this most difficult situation ---and because of this reason, I went ahead with redoubled courage. ”
In nearly every country overrun by the Nazis, the Jews were forced to wear badges marking them as Jews, they were rounded up into ghettos or concentration camps and then gradually transported to the killing centers. The death camps were essentially factories for murdering Jews. The Germans shipped thousands of Jews to them each day. Within a few hours of their arrival, the Jews had been stripped of their possessions and valuables, gassed to death, and their bodies burned in specially designed crematoriums. Approximately 3.5 million Jews were murdered in these death camps.
Four weeks after the invasion of the Soviet Union, on July 17, 1941, Hitler tasked SS chief Heinrich Himmler with responsibility for all security matters in the occupied Soviet Union. Hitler gave Himmler broad authority to physically eliminate any perceived threats to permanent German rule. Two weeks later, on July 31, Reich Marshall Hermann Göring, acting as Hitler's second-in-command, authorized Reinhard Heydrich, the chief of the Reich Main Office for Security (Reichssicherheitshauptamt; RSHA) and Himmler's direct subordinate, to make preparations for the implementation of a "complete solution of the Jewish question." Henceforth, the SS in general and the RSHA in particular enjoyed Hitler's decision-making authority to manage the implementation of the "Final Solution." [The RSHA consisted of the Security Police (Gestapo and Criminal Police) and the Security Service (Sicherheitsdienst-SD)]
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.   
Today it seems that Nazi war criminals escaped to Argentina using false identities supplied by the Red Cross, the humanitarian organisation has admitted ...  The International Committee of the Red Cross has said it unwittingly provided travel papers to at least 10 top Nazis, including Adolf Eichmann, Klaus Barbie, Erich Priebke and Josef Mengele ... A statement issued by the ICRC, from its Geneva headquarters, said they were among thousands of people found in refugee camps who were given Red Cross travel documents.
There were setbacks. In March, the diggers discovered they were tunneling in the direction of a burial pit and were forced to reroute the passageway, losing days in the process. Not long afterward, Dogim was on burial pit duty when he unearthed the bodies of his wife, mother and two sisters. Every member of the Burning Brigade lived with the knowledge that some of the corpses he was helping to burn belonged to family members. And yet to see one’s wife lying in the pit was something else entirely, and Dogim was consumed with sadness and fury. “[He] said he had a knife, that he was going to stab and kill the Sturmbannführer,” Farber later recalled. Farber told Dogim that he was thinking selfishly—even if he succeeded, the rest of the prisoners would be killed in retribution.
Anne Frank poses in 1941 in this photo made available by Anne Frank House in Amsterdam, Netherlands. In August of 1944, Anne, her family and others who were hiding from the occupying German Security forces, were all captured and shipped off to a series of prisons and concentration camps. Anne died from typhus at age 15 in Bergen-Belsen concentration camp, but her posthumously published diary has made her a symbol of all Jews killed in World War II. #
The men worked in shifts throughout the night, with saws, files and spoons stolen from the burial pits. Under the cover of darkness, they smuggled wood planks into the lengthening tunnel to serve as struts; as they dug, they brought sandy earth back out and spread it across the bunker floor. Any noise was concealed by the singing of the other prisoners, who were frequently forced to perform for the Sturmbannführer—arias from The Gypsy Baron, by the Austrian composer Johann Strauss II, were a favorite.
He acted instantly. He sent Otto Frank a copy of “In Search” and in effect offered his services as an unofficial agent to secure British and American publication, asserting his distance from any financial gain; his interest, he said, was purely “one of sympathy.” He saw in the diary the possibility of “a very touching play or film,” and asked Frank’s permission to explore the idea. Frank at first avoided reading Levin’s book, saturated as it was in passions and commitments so foreign to his own susceptibilities. He was not unfamiliar with Levin’s preoccupations; he had seen and liked one of his films. He encouraged Levin to go ahead—though a dramatization, he observed, would perforce “be rather different from the real contents” of the diary. Hardly so, Levin protested: no compromise would be needed; all the diarist’s thoughts could be preserved.
One of the clearest examples of Hitler’s single-minded (and seemingly suicidal) desire to rid the world of the Jews can be seen in the extermination of the Jews of Hungary. Until March of 1944, the Hungarian government had refused to allow the deportation of Hungarian Jews. It March 1944 the Germans occupied Hungary and by mid May ( two weeks before D Day) the mass deportations to Auschwitz. The Nazi leadership worked with particular intensity. The Soviet army was rapidly approaching Hungary and the Germans knew that they were going to lose the war. But there was no way that Hitler could allow such a large Jewish community to survive. He diverted trains that were badly needed to transport more soldiers to the Russian front just to send more Jews to Auschwitz. To him, the greater enemy was the Jew.
Germany invaded the Soviet Union in June 1941.[236] German propaganda portrayed the war against the Soviet Union as both an ideological war between German National Socialism and Jewish Bolshevism and a racial war between the Germans and the Jewish, Romani and Slavic Untermenschen ("sub-humans").[237] Local populations in some occupied Soviet territories actively participated in the killing of Jews and others, and helped identify and round up Jews.[238] German involvement ranged from active instigation and involvement to general guidance.[239] In Lithuania, Latvia, and western Ukraine, locals were deeply involved in the murder of Jews from the beginning of the German occupation. Some of these Latvian and Lithuanian units also participated in the murder of Jews in Belarus. In the south, Ukrainians killed about 24,000 Jews and some went to Poland to serve as concentration and death-camp guards.[238] Military units from some countries allied to Germany also killed Jews. Romanian units were given orders to exterminate and wipe out Jews in areas they controlled.[240] Ustaše militia in Croatia persecuted and murdered Jews, among others.[168] Many of the killings were carried out in public, a change from previous practice.[241]
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.

Concentration camps were top priority in the conference. ""Nazis would trap Jews in ghettos'' said Himmler. Then they were taken to death camps. Auschwitz mainly. They killed 1 to 3 million people there. '' Under proper guidance in the Final Solution the Jews are to be relocated for appropriate  labor in the east. Able-bodied Jews will be separated according to sex. Then taken in large work columns to work on roads of course many will die of natural causes.'' Himmler said this during the conference.
Before the war, Mengele had received doctorates in anthropology and medicine, and began a career as a researcher. He joined the Nazi Party in 1937 and the SS in 1938. He was assigned as a battalion medical officer at the start of World War II, then transferred to the Nazi concentration camps service in early 1943 and assigned to Auschwitz, where he saw the opportunity to conduct genetic research on human subjects. His subsequent experiments focused primarily on twins, with little regard for the health or safety of the victims.[2][3]