Although the composition of the ground, largely sand, was favorable for ground-penetrating radar, the dense forest surrounding the site interfered enough with the radar signals that they decided to try another tack. Paul Bauman and Alastair McClymont, geophysicists with Advisian WorleyParsons, a transnational engineering company, had more luck with electrical resistivity tomography, or ERT, which was originally developed to explore water tables and potential mining sites. ERT technology sends jolts of electrical current into the earth by way of metal electrodes hooked up to a powerful battery and measures the distinctive levels of resistivity of different types of earth; the result is a detailed map to a depth of more than a hundred feet.

Every detail of the actual extermination process was meticulously planned. Jews arriving in trains at Belzec, Sobibor, and Treblinka were falsely informed by the SS that they had come to a transit stop and would be moving on to their true destination after delousing. They were told their clothes were going to be disinfected and that they would all be taken to shower rooms for a good washing. Men were then split up from the women and children. Everyone was taken to undressing barracks and told to remove all of their clothing. Women and girls next had their hair cut off. First the men, and then the women and children, were hustled in the nude along a narrow fenced-in pathway nicknamed by the SS as the Himmelstrasse (road to Heaven). At the end of the path was a bathhouse with tiled shower rooms. As soon as the people were all crammed inside, the main door was slammed shut, creating an air-tight seal. Deadly carbon monoxide fumes were then fed in from a stationary diesel engine located outside the chamber.

On the eve of World War II, the Führer (supreme leader) publicly threatened the Jews of Europe during a speech in Berlin: "In the course of my life I have very often been a prophet, and have usually been ridiculed for it. During the time of my struggle for power it was in the first instance only the Jewish race that received my prophecies with laughter when I said that I would one day take over the leadership of the State, and with it that of the whole nation, and that I would then among other things settle the Jewish problem. Their laughter was uproarious, but I think that for some time now they have been laughing on the other side of their face. Today I will once more be a prophet: if the international Jewish financiers in and outside Europe should succeed in plunging the nations once more into a world war, then the result will not be the Bolshevizing of the earth, and thus the victory of Jewry, but the annihilation of the Jewish race in Europe!"

Like the network of concentration camps that followed, becoming the killing grounds of the Holocaust, Dachau was under the control of Heinrich Himmler, head of the elite Nazi guard, the Schutzstaffel (SS), and later chief of the German police. By July 1933, German concentration camps (Konzentrationslager in German, or KZ) held some 27,000 people in “protective custody.” Huge Nazi rallies and symbolic acts such as the public burning of books by Jews, Communists, liberals and foreigners helped drive home the desired message of party strength.
The possible final remnant will, since it will undoubtedly consist of the most resistant portion, have to be treated accordingly because it is the product of natural selection and would, if released, act as the seed of a new Jewish revival (see the experience of history.) In the course of the practical execution of the final solution, Europe will be combed through from west to east. Germany proper, including the Protectorate of Bohemia and Moravia, will have to be handled first due to the housing problem and additional social and political necessities. The evacuated Jews will first be sent, group by group, to so-called transit ghettos, from which they will be transported to the East.[256]
Although the Nazis were successful in isolating Jews socially and economically, the actual physical isolation of the Eastern European population did not begin until December 1939. Jews had known the ghetto since the Middle Ages, although Jews were then permitted to leave the ghetto during the day and participate in the business of the general community. The purpose of the Nazi ghetto, however, was to create a total confinement for the Jewish population, turning entire neighborhoods into a prison unlike the ghettos of centuries past.
British troops guard Alex Pickowski, Camp Commandant of Dechau concentration camp  © The discovery of Belsen brought home the shocking truth about Nazi atrocities, but the facts had been known for some time. As early as the summer of 1941, British signals intelligence had intercepted and decoded radio messages from German police units co-operating with the Einsatzgruppen, and details of the killings of Jews were included in the monthly summaries that were sent to Churchill. Churchill responded with a speech on August 24 1941 in which he called the massacres 'a crime without a name' but erroneously identified the victims as 'Russian patriots defending their native soil'. Otherwise, these facts were not made public.
German officers raided the building and made arrests on August 4, 1944. The arresting officer, Karl Silberbauer, later said he vividly remembered arresting the Franks, and even told Otto Frank, “What a lovely daughter you have.” When Silberbauer’s actions were discovered in 1963, he was suspended from his job at the Viennese police force. He is quoted as saying, “Why pick on me after all these years? I only did my duty. Now I am suspended and I have just bought some new furniture and how am I going to pay for it?" After an investigation, he was allowed to return to his job.
Many healthy, young strong Jews were not killed immediately. The Germans' war effort and the “Final Solution” required a great deal of manpower, so the Germans reserved large pools of Jews for slave labor. These people, imprisoned in concentration and labor camps, were forced to work in German munitions and other factories, such as I.G. Farben and Krupps, and wherever the Nazis needed laborers. They were worked from dawn until dark without adequate food and shelter. Thousands perished, literally worked to death by the Germans and their collaborators.
^ Ronald J. Berger (2002). Fathoming the Holocaust: A Social Problems Approach. Transaction Publishers. p. 57–8. ISBN 0202366111. Bureaucrats in the Reichsbahn performed important functions that facilitated the movement of trains. They constructed and published timetables, collected fares, and allocated cars and locomotives. In sending Jews to their death, they did not deviate much from the routine procedures they used to process ordinary train traffic.
“The final solution transcended the bounds of modern historical experience. Never before in modern history had one people made the killing of another the fulfillment of an ideology, in whose pursuit means were identical with ends. History has, to be sure, recorded terrible massacres and destructions that one people perpetrated against another. But all, however cruel and unjustifiable, were intended to achieve an instrumental ends, being means to ends and not ends in and of themselves.” (3)
Josef Mengele had hoped to use the “research” he had garnered in Auschwitz in order to produce his Habilitation, a second, post-doctoral, dissertation required for admission to a university faculty as a professor in German-speaking lands. Instead, in January 1945, as the Soviet Army advanced through western Poland, Mengele fled Auschwitz. He spent the next few weeks at the Gross-Rosen concentration camp, until its evacuation. He then made his way west to evade capture by Soviet forces.

In January 1933, after a bitter ten-year political struggle, Adolf Hitler came to power in Germany. During his rise to power, Hitler had repeatedly blamed the Jews for Germany's defeat in World War I and subsequent economic hardships. Hitler also put forward racial theories asserting that Germans with fair skin, blond hair and blue eyes were the supreme form of human, or master race. The Jews, according to Hitler, were the racial opposite, and were actively engaged in an international conspiracy to keep this master race from assuming its rightful position as rulers of the world.
An ardent Nazi, In 1943 Josef Mengele was appointed by Heinrich Himmler to be chief doctor at Birkenau, the supplementary extermination camp at Auschwitz, where he and his staff selected incoming Jews for labor or extermination and where he supervised medical experiments on inmates to discover means of increasing fertility (to increase the German “race”).

An Israeli historian Dina Porat claimed that the Final Solution, i.e.: "the systematic overall physical extermination of Jewish communities one after the other – began in Lithuania" during the massive German chase after the Red Army across the Baltic states in Reichskommissariat Ostland.[53] The subject of the Holocaust in Lithuania has been analysed by Konrad Kweit from USHMM who wrote: "Lithuanian Jews were among the first victims of the Holocaust [beyond the eastern borders of occupied Poland]. The Germans carried out the mass executions [...] signaling the beginning of the 'Final Solution'."[54] About 80,000 Jews were killed in Lithuania by October (including in formerly Polish Wilno) and about 175,000 by the end of 1941 according to official reports.[53]

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]
After obtaining a copy of his birth certificate through the West German embassy in 1956, Mengele was issued with an Argentine foreign residence permit under his real name. He used this document to obtain a West German passport, also using his real name, and embarked on a trip to Europe.[71][72] He met up with his son Rolf (who was told Mengele was his "Uncle Fritz")[73] and his widowed sister-in-law Martha, for a ski holiday in Switzerland; he also spent a week in his home town of Günzburg.[74][75] When he returned to Argentina in September 1956, Mengele began living under his real name. Martha and her son Karl Heinz followed about a month later, and the three began living together. Josef and Martha were married in 1958 while on holiday in Uruguay, and they bought a house in Buenos Aires.[71][76] Mengele's business interests now included part ownership of Fadro Farm, a pharmaceutical company.[74] Along with several other doctors, Mengele was questioned in 1958 on suspicion of practicing medicine without a license when a teenage girl died after an abortion, but he was released without charge. Aware that the publicity would lead to his Nazi background and wartime activities being discovered, he took an extended business trip to Paraguay and was granted citizenship there in 1959 under the name "José Mengele".[77] He returned to Buenos Aires several times to settle his business affairs and visit his family. Martha and Karl lived in a boarding house in the city until December 1960, when they returned to Germany.[78]
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]
Hilberg's analysis of the steps that led to the destruction of European Jews revealed that it was "an administrative process carried out by bureaucrats in a network of offices spanning a continent".[108] Hilberg divides this bureaucracy into four components or hierarchies: the Nazi Party, the civil service, industry, and the Wehrmacht armed forces – but their cooperation is viewed as "so complete that we may truly speak of their fusion into a machinery of destruction".[109] For Hilberg, the key stages in the destruction process were: definition and registration of the Jews; expropriation of property; concentration into ghettoes and camps; and, finally, annihilation.[110] Hilberg gives an estimate of 5.1 million as the total number of Jews killed. He breaks this figure down into three categories: Ghettoization and general privation: over 800,000; open-air shootings: over 1,300,000; extermination camps: up to 3,000,000.[111]

A week later, he and other members of the crew received a visit from the camp’s Sturmbannführer, or commander, a 30-year-old dandy who wore boots polished shiny as mirrors, white gloves that reached up to his elbows, and smelled strongly of perfume. Zeidel remembered what the commandant told them: “Just about 90,000 people were killed here, lying in mass graves.” But, the Sturmbannführer explained, “there must not be any trace” of what had happened at Ponar, lest Nazi command be linked to the mass murder of civilians. All the bodies would have to be exhumed and burned. The wood collected by Zeidel and his fellow prisoners would form the pyres.

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."
Similar smaller rescue operations occurred in Greece, where Jews were hidden in the mountains or on islands. Later, Greek Jews were smuggled into Turkey. Similar popular aid to the Jews was rendered in Finland and in Holland there was a protest strike in February 1941, against the deportation of Dutch Jews. The Italian army also helped Jews in their occupation zones in France and Yugoslavia, and they played an important role in rescuing Italian Jews before the Germans occupied Italy in September 1943.
  Man blinded by continuous beatings  © The ideas and emotions that lay behind the Holocaust were not new, nor were they uniquely German. The Nazis were the heirs of a centuries-old tradition of Jew-hatred, rooted in religious rivalry and found in all European countries. When the Nazis came to carry out their genocidal programme, they found collaborators in all the countries they dominated, including governments that enjoyed considerable public support. Most people drew the line at mass murder, but relatively few could be found to oppose it actively or to extend help to the Jews.

I am not sure I agree. I’m the son of two Holocaust survivors. As a child I heard from one of my parents’ best friends about living through Mengele’s infamous selection process at Auschwitz. He haunted my nightmares. So, of course, I feel angry at the German government’s lack of action in the early years after World War II and frustration at the Mossad’s failure to bring him to justice. Still, I believe that the decision not to prioritize capturing him was the right one. Every intelligence operation carries risks. The Mossad’s approach to Mengele shows prudence and pragmatism on the part of the agency’s leaders — in contrast with Begin’s emotionalism.
Once the war ended, Zeidel traveled overland before smuggling himself in the autumn of 1945 to what would become the State of Israel. He was among the estimated 60 million people unmoored by the seismic violence of the Second World War. He had no family left: His parents and siblings were presumed killed by the Nazis or their collaborators. In 1948, he married a woman he’d first met, years earlier, in the Jewish ghetto at Vilnius. He died in 2007, in his sleep, the last living member of the Burning Brigade.
The Nazis established ghettos in occupied Poland. Polish and western European Jews were deported to these ghettos. During the German invasion of the Soviet Union in 1941, mobile killing squads (Einsatzgruppen) began killing entire Jewish communities. The methods used, mainly shooting or gas vans, were soon regarded as inefficient and as a psychological burden on the killers.
By the end of 1934 Hitler was in absolute control of Germany, and his campaign against the Jews in full swing. The Nazis claimed the Jews corrupted pure German culture with their "foreign" and "mongrel" influence. They portrayed the Jews as evil and cowardly, and Germans as hardworking, courageous, and honest. The Jews, the Nazis claimed, who were heavily represented in finance, commerce, the press, literature, theater, and the arts, had weakened Germany's economy and culture. The massive government-supported propaganda machine created a racial anti-Semitism, which was different from the long­standing anti-Semitic tradition of the Christian churches.
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.”
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]