The technique of Blitzkrieg is based on the principle of surprise as opposed to an effort to crush an enemy by bringing an overwhelming superiority in numbers and armament to bear against him. It can be likened to the swift and deadly thrust of a rapier as opposed to the crushing blow of a battle-axe or a war club. The objective is not the enemy civilian population but the enemy armed forces, both ground and air.
——— (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
Some ghettos were initially open, which meant that Jews could leave the area during the daytime but had to be back by a curfew. Later, all ghettos became closed, meaning that Jews were not allowed to leave under any circumstances. Major ghettos were located in the cities of Polish cities of Bialystok, Lodz, and Warsaw. Other ghettos were found in present-day Minsk, Belarus; Riga, Latvia; and Vilna, Lithuania. The largest ghetto was in Warsaw. At its peak in March 1941, some 445,000 were crammed into an area just 1.3 square miles in size.

The government defined a Jewish person as someone with three or four Jewish grandparents, not someone who had religious convictions. This meant that people who had never practiced, or hadn’t practiced Judaism in many years, or even converted to Christianity were subjected to persecution. Although anti-semitism was pervasive in 1930s Germany, these restrictions frequently extended to any person the Nazis considered to be “non-Aryan”.
When the 322nd Rifle Division of the Red Army liberated Auschwitz on 27 January 1945, the soldiers found 7,500 prisoners alive and over 600 corpses.[247][248] Auschwitz II-Birkenau was liberated at around 3:30 p.m., and the main camp (Auschwitz I) two hours later.[249] Items found by the Soviet soldiers included 370,000 men's suits, 837,000 women's garments, and 7.7 tonnes (8.5 short tons) of human hair.[247][248] Primo Levi described seeing the first four Russian soldiers on horseback approach the camp at Monowitz, where he had been in the sick bay. The soldiers threw "strangely embarrassed glances at the sprawling bodies, at the battered huts and at us few still alive ...":[250]
Schindler grew up in Svitavy, Moravia, and worked in several trades until he joined the Abwehr, the military intelligence service of Nazi Germany, in 1936. He joined the Nazi Party in 1939. Prior to the German occupation of Czechoslovakia in 1938, he collected information on railways and troop movements for the German government. He was arrested for espionage by the Czechoslovak government but was released under the terms of the Munich Agreement in 1938. Schindler continued to collect information for the Nazis, working in Poland in 1939 before the invasion of Poland at the start of World War II. In 1939, Schindler acquired an enamelware factory in Kraków, Poland, which employed at the factory's peak in 1944 about 1,750 workers, of whom 1,000 were Jews. His Abwehr connections helped Schindler protect his Jewish workers from deportation and death in the Nazi concentration camps. As time went on, Schindler had to give Nazi officials ever larger bribes and gifts of luxury items obtainable only on the black market to keep his workers safe.