The nature and timing of the decisions that led to the Final Solution is an intensely researched and debated aspect of the Holocaust. The program evolved during the first 25 months of war leading to the attempt at "murdering every last Jew in the German grasp".[5] Most historians agree, wrote Christopher Browning, that the Final Solution cannot be attributed to a single decision made at one particular point in time.[5] "It is generally accepted the decision-making process was prolonged and incremental."[6] In 1940, following the Fall of France, Adolf Eichmann devised the Madagascar Plan to move Europe's Jewish population to the French colony, but the plan was abandoned for logistical reasons, mainly a naval blockade.[7] There were also preliminary plans to deport Jews to Palestine and Siberia.[8] In 1941, wrote Raul Hilberg, in the first phase of the mass murder of Jews, the mobile killing units began to pursue their victims across occupied eastern territories; in the second phase, stretching across all of German-occupied Europe, the Jewish victims were sent on death trains to centralized extermination camps built for the purpose of systematic implementation of the Final Solution.[9]
——— (2015). "Is the "Final Solution" Unique?". The Third Reich in History and Memory. London: Abacus. ISBN 978-0-349-14075-9. Revised and extended from Richard Evans (2011). "Wie einzigartig war die Ermordung der Juden durch die Nationalsocialisten?" in Günter Morsch and Bertrand Perz (eds). Neue Studien zu nationalsozialistischen Massentötungen durch Giftgas: Historische Bedeutung, technische Entwicklung, revisionistische Leugnung. Berlin: Metropol Verlag, pp. 1–10. ISBN 9783940938992
Prisoners transported to these extermination camps were told to undress so they could shower. Rather than a shower, the prisoners were herded into gas chambers and killed. (At Chelmno, the prisoners were herded into gas vans instead of gas chambers.) Auschwitz was the largest concentration and extermination camp built. It is estimated that 1.1 million people were killed at Auschwitz.
The worst example was the pogrom in the town of Kielce in Poland on July 4th, 1946. When the 200 surviving Jews returned to their village, the local Poles who were upset to see that any had survived instigated a blood libel—accusing the Jews of the kidnap and ritual murder of Polish child. In the ensuing violence 40 of the Jews, all Holocaust survivors, were murdered by the Polish towns people.
Eichmann received various levels of cooperation from each of the various occupied governments. But in countries such as Holland, Belgium, Albania, Denmark, Finland and Bulgaria, some Jews were saved from their deaths by the action of the sympathetic populace and government officials. Denmark’s government and populace were exemplary in their heroism in saving Jews. In other countries such as Poland, Greece, France, and Yugoslavia, the deportation of Jews to the death camps was facilitated by the cooperation of the government.
^ French Jews were active in the French Resistance.[328] Zionist Jews formed the Armee Juive (Jewish Army), which participated in armed resistance under a Zionist flag, smuggled Jews out of the country,[329] and participated in the liberation of Paris and other cities.[330] As many as 1.5 million Jewish soldiers fought in the Allied armies, including 500,000 in the Red Army, 550,000 in the U.S. Army, 100,000 in the Polish army, and 30,000 in the British army. About 200,000 Jewish soldiers serving in the Red Army died in the war, either in combat or after capture.[331] The Jewish Brigade, a unit of 5,000 Jewish volunteers from the British Mandate of Palestine, fought in the British Army.[332]
The killings continued uninterrupted. On 12 October 1941, in Stanisławów, some 10,000–12,000 Jewish men, women, and children were shot at the Jewish cemetery by the German uniformed SS-men and Ukrainian Auxiliary Police during the so-called "Bloody Sunday" (de).[64] The shooters began firing at 12 noon and continued without stopping by taking turns. There were picnic tables set up on the side with bottles of vodka and sandwiches for those who needed to rest from the deafening noise of gunfire.[65] It was the single largest massacre of Polish Jews in Generalgouvernement prior to mass gassings of Aktion Reinhard, which commenced at Bełżec in March 1942. Notably, the extermination operations in Chełmno had begun on 8 December 1941, one-and-a-half month before Wannsee, but Chełmno – located in Reichsgau Wartheland – was not a part of Reinhard, and neither was Auschwitz-Birkenau functioning as an extermination center until November 1944 in Polish lands annexed by Hitler and added to Germany proper.[65][66]
“I’ve offered three possibilities” to the museum, Freund said. The first was to try to partially excavate one section of the tunnel and protect it with climate-controlling plexiglass walls. Alternatively, a re-creation could be built, as had been done with the recently finished facsimile of King Tutankhamun’s tomb, in the Valley of the Kings, in Egypt. The last option, Freund allowed, was a “little futuristic”: Relying on the data from the scans, a 3-D film could be created so visitors could relive the experience of the escape.

Mengele injected chemicals into the eyes of children in an attempt to change their eye color. Unfortunately a strict veil of secrecy over the experiments enabled Mengele to do his work more effectively.The full extent of his gruesome work will never be known because the records he sent to Dr. Von Verschuer at the Kaiser Wilhelm Institute were shipped out in two truckloads and destroyed by the latter.

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]