Höss oversaw the rapid construction of a gigantic new annex called Birkenau containing four large gas chamber-crematory buildings and scores of huts for slave laborers. From the moment it became operational in the spring of 1943, Auschwitz-Birkenau served as the focal point of the Nazi effort to exterminate the Jews. Hour after hour, trainloads of Jews arrived from all over Europe. The people were subjected to a life-and-death selection process by SS medical personnel such as Dr. Josef Mengele. Adults who seemed fit for labor were allowed to live and were marched away. All others, including children, the elderly and anyone deemed unfit went straight to the gas chambers.

Himmler assembled a force of about 3,000 men from Security Police, Gestapo, Kripo, SD, and the Waffen-SS, as the so-called "special commandos of the security forces" known as the Einsatzgruppen, to eliminate both communists and Jews in occupied territories.[34] These forces were supported by 21 battalions of Orpo Reserve Police under Kurt Daluege, adding up to 11,000 men.[35] The explicit orders given to the Order Police varied between locations, but for Police Battalion 309 participating in the first mass murder of 5,500 Polish Jews in the Soviet-controlled Białystok (a Polish provincial capital), Major Weiss explained to his officers that Barbarossa is a war of annihilation against Bolshevism,[36] and that his battalions would proceed ruthlessly against all Jews, regardless of age or sex.[37]
In the early part of 1939, my father, mother and infant brother were living in Paris, as refugees from the pogroms in Romania. They were illegal immigrants, living modestly with the hope of giving themselves and their son a better future than the one they had. But World War II was approaching, and the citizens of France were in danger of falling prey to the Vichy regime that was collaborating with Germany and Hitler. As Jews and illegal residents, my parents were in an extremely precarious situation. They were poor and had no connections or reasonable way of changing their situation. But a gentile, the wife of an Italian diplomat for whom my mother sewed her clothes, understood what the future of my family would be if they stayed in France. In an act of righteousness, mercy and generosity, she offered my parents tickets: first for the train to Marseilles and then, passage onto a ship bound to Bolivia. I was born in Bolivia, where my family’s life was spared the horrors of the Holocaust. I have eternal gratitude to the woman who saved us.
In the autumn of 1941, SS chief Heinrich Himmler assigned German General Odilo Globocnik (SS and police leader for the Lublin District) with the implementation of a plan to systematically murder the Jews of the Generalgouvernement. The code name Operation Reinhard was eventually given to this plan, named after Heydrich (who was assassinated by Czech partisans in May 1942). As part of Operation Reinhard, Nazi leaders established three killing centers in Poland—Belzec, Sobibor, and Treblinka—with the sole purpose of the mass murder of Jews.
One extraordinary aspect of the journey to the death camps was that the Nazis often charged Jews deported from Western Europe train fare as third class passengers under the guise that they were being "resettled in the East." The SS also made new arrivals in the death camps sign picture postcards showing the fictional location "Waldsee" which were sent to relatives back home with the printed greeting: "We are doing very well here. We have work and we are well treated. We await your arrival."
A unique example of anti-Nazi resistance occurred in the Bialystok ghetto, where several anti-Nazi German and Austrian soldiers were sentenced to death for smuggling weapons and wireless sets to the Jewish resistance. One of these men, Otto Busse, survived and settled in the Kibbutz Nes Amin in 1969, devoting his life to Israel as a concrete example of “Christian atonement.”
After the June 1941 German invasion of the Soviet Union, SS and police units (acting as mobile killing units) began massive killing operations aimed at entire Jewish communities. By autumn 1941, the SS and police introduced mobile gas vans. These paneled trucks had exhaust pipes reconfigured to pump poisonous carbon monoxide gas into sealed spaces, killing those locked within. They were designed to complement ongoing shooting operations.
Freund and his colleagues, including Harry Jol, a professor of geology and anthropology from the University of Wisconsin, Eau Claire, and Philip Reeder, a geoscientist and mapping expert from Duquesne University, in Pittsburgh, were brought in to explore further. They spent five days scanning the ground beneath the school and the surrounding landscape with ground-penetrating radar, and emerged with a detailed digital map that displayed not just the synagogue’s main altar and seating area but also a separate building that held a bathhouse containing two mikvaot, or ceremonial baths, a well for water and several latrines. Afterward, Freund met with the staff at the Vilna Gaon Jewish State Museum, named after the famed 18th-century Talmudic scholar from Vilnius, and a partner on the Great Synagogue project. Then, Freund said, “We asked them: ‘What else would you like us to do? We’ll do it for free.’”
I simply can't build up my hopes on a foundation consisting of confusion, misery and death, I see the world gradually being turned into a wilderness, I hear the ever approaching thunder, which will destroy us too, I can feel the sufferings of millions and yet, if I look up into the heavens, I think that it will all come right, that this cruelty too will end, and that peace and tranquility will return again. In the meantime, I must uphold my ideals, for perhaps the time will come when I shall be able to carry them out.

The biblical term shoah (Hebrew: שׁוֹאָה), meaning "destruction", became the standard Hebrew term for the murder of the European Jews, first used in a pamphlet in 1940, Sho'at Yehudei Polin ("Sho'ah of Polish Jews"), published by the United Aid Committee for the Jews in Poland.[11] On 3 October 1941 the cover of the magazine The American Hebrew used the phrase "before the Holocaust", apparently to refer to the situation in France,[12] and in May 1943 The New York Times, discussing the Bermuda Conference, referred to the "hundreds of thousands of European Jews still surviving the Nazi Holocaust".[13] In 1968 the Library of Congress created a new category, "Holocaust, Jewish (1939–1945)".[14] The term was popularized in the United States by the NBC mini-series Holocaust (1978), about a fictional family of German Jews,[15] and in November 1978 the President's Commission on the Holocaust was established.[16] As non-Jewish groups began to include themselves as Holocaust victims too, many Jews chose to use the terms Shoah or Churban instead.[12][g] The Nazis used the phrase "Final Solution to the Jewish Question" (German: die Endlösung der Judenfrage).[18]

To concentrate and monitor the Jewish population as well as to facilitate later deportation of the Jews, the Germans and their collaborators created ghettos, transit camps, and forced-labor camps for Jews during the war years. The German authorities also established numerous forced-labor camps, both in the so-called Greater German Reich and in German-occupied territory, for non-Jews whose labor the Germans sought to exploit.
The same year, the Mossad hoped to tap phone conversations between Mengele and his son, Rolf, who was living in West Berlin. The two were born on the same day, and the Israelis hoped they would call each other to say happy birthday. Cold War Berlin was inundated with spies, and the Mossad preferred when possible not to work there. But they calculated that “this may be the last opportunity” to hear from Mengele. Israeli operatives installed listening devices in Rolf’s home and office, and in his phones.
According to psychologist Eva Fogelman “Rescuers’ families nourished an independence of mind and spirit. … In talking with rescuers from all kinds of different homes, I found that one quality above all others was emphasized time and again: a familial acceptance of people who were different. This value was the centrepiece of the childhood of rescuers and became the core from which their rescuer self evolved. From the earliest ages, rescuers were taught by their parents that people are inextricably linked to one another. No one person or group was better than any other. The conviction that all people, no matter how marginal, are of equal value was conveyed to children of both religious and nonreligious households.” Fogelman is the daughter of a Holocaust survivor and founder of the Jewish Foundation for Christian Rescuers.

After the September 1939 German invasion of Poland (the beginning of World War II), anti-Jewish policy escalated to the imprisonment and eventual murder of European Jewry. The Nazis first established ghettos (enclosed areas designed to isolate and control the Jews) in the Generalgouvernement (a territory in central and eastern Poland overseen by a German civilian government) and the Warthegau (an area of western Poland annexed to Germany). Polish and western European Jews were deported to these ghettos where they lived in overcrowded and unsanitary conditions with inadequate food.

Theodor Holman wrote in reply to Sietse van der Hoek that the diary entry for 28 September 1942 proved conclusively the character's fictional origin.[citation needed] Jacqueline van Maarsen agreed,[citation needed] but Otto Frank assumed his daughter had her real acquaintance in mind when she wrote to someone of the same name.[citation needed] However, Kitty Egyedi said in an interview that she was flattered by the assumption, but doubted the diary was addressed to her:
The roots of Hitler’s particularly virulent brand of anti-Semitism are unclear. Born in Austria in 1889, he served in the German army during World War I. Like many anti-Semites in Germany, he blamed the Jews for the country’s defeat in 1918. Soon after the war ended, Hitler joined the National German Workers’ Party, which became the National Socialist German Workers’ Party (NSDAP), known to English speakers as the Nazis. While imprisoned for treason for his role in the Beer Hall Putsch of 1923, Hitler wrote the memoir and propaganda tract “Mein Kampf”(My Struggle), in which he predicted a general European war that would result in “the extermination of the Jewish race in Germany.”
I confess to feeling slightly voyeuristic while reading this. It was constantly in the back of my mind that this was no ordinary novel, or even a true-to-life account. This was someone’s diary. Every page written in confidence, each word revealing the thoughts closest to the heart of this young girl. As a journal-keeper myself, I sometimes find myself wondering, “What if someone else were to read this?” which causes me to wonder how much to filter my words. But then, isn’t the purpose of a diary ...more

In 1933, Jews in Germany numbered around 525,000, or only 1 percent of the total German population. During the next six years, Nazis undertook an “Aryanization” of Germany, dismissing non-Aryans from civil service, liquidating Jewish-owned businesses and stripping Jewish lawyers and doctors of their clients. Under the Nuremberg Laws of 1935, anyone with three or four Jewish grandparents was considered a Jew, while those with two Jewish grandparents were designated Mischlinge (half-breeds).
Szeptycki (also spelled Sheptytskyi) was a member of the Polish Catholic hierarchy who ordered that the clergy reporting to him act to save Jews. At first, Andrey worked with his brother Abbot Kliment to help a Jewish boy, Kurt Lewin, whose parents had been murdered by the Nazi's by keeping him safe in one of their monasteries in western Ukraine. During the course of the Holocaust, Szeptycki saved a number of Jews by allowing them to find shelter within the monasteries affiliated with the Greek Catholic Church.
One of the most horrific terms in history was used by Nazi Germany to designate human beings whose lives were unimportant, or those who should be killed outright: Lebensunwertes Leben, or "life unworthy of life". The phrase was applied to the mentally impaired and later to the "racially inferior," or "sexually deviant," as well as to "enemies of the state" both internal and external. From very early in the war, part of Nazi policy was to murder civilians en masse, especially targeting Jews. Later in the war, this policy grew into Hitler's "final solution", the complete extermination of the Jews. It began with Einsatzgruppen death squads in the East, which killed some 1,000,000 people in numerous massacres, and continued in concentration camps where prisoners were actively denied proper food and health care. It culminated in the construction of extermination camps -- government facilities whose entire purpose was the systematic murder and disposal of massive numbers of people. In 1945, as advancing Allied troops began discovering these camps, they found the results of these policies: hundreds of thousands of starving and sick prisoners locked in with thousands of dead bodies. They encountered evidence of gas chambers and high-volume crematoriums, as well as thousands of mass graves, documentation of awful medical experimentation, and much more. The Nazis killed more than 10 million people in this manner, including 6 million Jews. (This entry is Part 18 of a weekly 20-part retrospective of World War II) 

On January 20, 1942, Reinhard Heydrich, head of the Reich Security Head Office, convened all secretaries of state of the major German ministries to the Wannsee Conference. This conference is generally held to have been a major turning point, whereby the “final solution of the Jewish question” in Europe by “evacuation” to the East and by other “means” was decided upon. But in fact, the mass extermination of the Jews on an industrial scale, made possible by the creation of death camps, was launched prior to this notorious conference.
The Jews killed represented around one third of the world population of Jews,[398] and about two-thirds of European Jewry, based on an estimate of 9.7 million Jews in Europe at the start of the war.[399] Much of the uncertainty stems from the lack of a reliable figure for the number of Jews in Europe in 1939, numerous border changes that make avoiding double-counting of victims difficult, lack of accurate records from the perpetrators, and uncertainty about whether deaths occurring months after liberation, but caused by the persecution, should be counted.[392]

The plans to exterminate all the Jews of Europe was formalized at the Wannsee Conference, held at an SS guesthouse near Berlin,[24] on 20 January 1942. The conference was chaired by Heydrich and attended by 15 senior officials of the Nazi Party and the German government. Most of those attending were representatives of the Interior Ministry, the Foreign Ministry, and the Justice Ministry, including Ministers for the Eastern Territories.[25] At the conference, Heydrich indicated that approximately 11,000,000 Jews in Europe would fall under the provisions of the "Final Solution". This figure included not only Jews residing in Axis-controlled Europe, but also the Jewish populations of the United Kingdom and of neutral nations (Switzerland, Ireland, Sweden, Spain, Portugal, and European Turkey).[2] Eichmann's biographer David Cesarani wrote that Heydrich's main purpose in convening the conference was to assert his authority over the various agencies dealing with Jewish issues. "The simplest, most decisive way that Heydrich could ensure the smooth flow of deportations" to death camps, according to Cesarani, "was by asserting his total control over the fate of the Jews in the Reich and the east" under the single authority of the RSHA.[26] A copy of the minutes of this meeting was found by the Allies in March 1947;[27] it was too late to serve as evidence during the first Nuremberg Trial, but was used by prosecutor General Telford Taylor in the subsequent Nuremberg Trials.[28]

"Righteous Gentiles of the Holocaust by David P. Gushee is an authoritative and indispensable exploration of a highly important aspect of the Holocaust, the willingness of a small, but morally significant, number of non-Jews to take on great risks for themselves and their families to rescue Jews from the Nazi death machine. In this well-documented, well-written book, Gushee explores the full range of Gentile responses to the plight of the Jews from overt hostility and obscene brutality to altruistic rescue, the better to understand the achievements of truly Righteous Gentiles. Highly recommended for anyone interested in the Holocaust."―Richard L. Rubenstein, President Emeritus, Distinguished Professor of Religion, University of Bridgeport
Twins were subjected to weekly examinations and measurements of their physical attributes by Mengele or one of his assistants.[49] The experiments he performed on twins included unnecessary amputation of limbs, intentionally infecting one twin with typhus or some other disease, and transfusing the blood of one twin into the other. Many of the victims died while undergoing these procedures,[50] and those who survived the experiments were sometimes killed and their bodies dissected once Mengele had no further use for them.[51] Nyiszli recalled one occasion on which Mengele personally killed fourteen twins in one night by injecting their hearts with chloroform.[31] If one twin died from disease, he would kill the other twin to allow comparative post-mortem reports to be produced for research purposes.[52]