Likewise at Auschwitz Dr. Herta Oberhauser killed children with oil and evipan injections, removed their limbs and vital organs, rubbed ground glass and sawdust into wounds. She drew a twenty-year sentence as a war criminal, but was released in 1952 and became a family doctor at Stocksee in Germany. Her license to practice medicine was revoked in 1960. (Laska)
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.
The men pictured relaxing and enjoying themselves at a place called Solahutte, near Auschwitz-Birkenau, are leading SS officers who administered monstrous acts, carried out against millions of innocent victims. The men are (from left to right) Richard Baer (Commandant of Auschwitz-Birkenau), Dr Josef Mengele (the Angel of Death), Josef Kramer (Commandant of Bergen-Belsen), Rudolf Hoess (first Camp Commandant of Auschwitz-Birkenau) and Anton Thumann (Commandant of Majdanek).
Auschwitz is the most famous because there the killing machine was the most efficient. There, between the end of 1941 and 1944, as many as 12,000 Jews a day could be gassed to death and cremated. In addition to the Jews, hundreds of thousands of others deemed threats to the Nazi regime or considered racially inferior or socially deviant were also murdered.
Historians of the Holocaust are divided into two schools: the “intentionalists” insist on the central role of Nazi ideology and believe that there was a carefully prepared plan for the extermination of European Jewry; the “functionalists” or “structuralists” by contrast, stress the chaotic nature of the Nazi system, a non-design reflected in their foreign and economic policies as well. According to the latter school, it was this inherent disorder rather than premeditated design that led, through a process of cumulative radicalization, to the systematic extermination of European Jewry.

While concentration camps were meant to work and starve prisoners to death, extermination camps (also known as death camps) were built for the sole purpose of killing large groups of people quickly and efficiently. The Nazis built six extermination camps, all in Poland: Chelmno, Belzec, Sobibor, Treblinka, Auschwitz, and Majdanek. (Auschwitz and Majdanek were both concentration and extermination camps.)

It is not clear which of the four gas chambers at Birkenau that Litwinska was referring to. The Krema IV and Krema V gas chambers were on the ground floor and had "small windows high up near the roof" where the gas pellets were thrown in by the SS men. But neither of these two gas chambers had a "gas chamber chute" for dumping the victims into the gas chamber from "tipper-type lorries," which Americans would call dump trucks.
Hitler intended to blame the Jews for the new world war he was soon to provoke. That war began in September 1939 as German troops stormed into Poland, a country that was home to over three million Jews. After Poland's quick defeat, Polish Jews were rounded up and forced into newly established ghettos at Lodz, Krakow, and Warsaw, to await future plans. Inside these overcrowded walled-in ghettos, tens of thousands died a slow death from hunger and disease amid squalid living conditions. The ghettos soon came under the jurisdiction of Heinrich Himmler, leader of the Nazi SS, Hitler's most trusted and loyal organization, composed of fanatical young men considered racially pure according to Nazi standards.
Because of the special circumstances of its creation and publication — Miep Gies, one of the office employees who sustained the Franks by bringing supplies and news from the outside world, gathered Anne’s papers after the family’s arrest and gave them to Otto, the only Annex inhabitant to survive, when he returned from Auschwitz — many readers have treated the “Diary” as something akin to a saint’s relic: a text almost holy, not to be tampered with. Thus the outcry that greeted the discovery that Otto, in putting together a manuscript of the “Diary” for publication in 1947, had deleted whole passages in which Anne discussed in graphic terms her developing sexuality and her criticism of her mother, and the excitement when, in 1995, a “Definitive Edition” appeared, restoring much of the deleted material. Meanwhile, the enormously successful Broadway adaptation of the “Diary” has been severely rebuked for downplaying Anne’s Judaism and ironing out the nuances of her message. “Who owns Anne Frank?” Cynthia Ozick asked in an essay that berates the Broadway adapters for emphasizing the uplifting elements of Anne’s message — particularly the famous quotation, “In spite of everything, I still believe that people are really good at heart” — while insufficiently accounting for her hideous death, at age 15, in Bergen-Belsen.
At Auschwitz alone, more than 2 million people were murdered in a process resembling a large-scale industrial operation. A large population of Jewish and non-Jewish inmates worked in the labor camp there; though only Jews were gassed, thousands of others died of starvation or disease. During the summer of 1944, even as the events of D-Day (June 6, 1944) and a Soviet offensive the same month spelled the beginning of the end for Germany in the war, a large proportion of Hungary’s Jewish population was deported to Auschwitz, and as many as 12,000 Jews were killed every day.
  American soldiers stare down at a mass grave in Nordhausen concentration camp  © Originally a concentration camp for Polish political prisoners, Auschwitz was greatly expanded in 1941 with the addition of a much larger camp at nearby Birkenau. In all, Auschwitz-Birkenau and its sub-camps held 400,000 registered prisoners including 205,000 Jews, 137,000 Poles, 21,000 Gypsies, 12,000 Soviet POWs and 25,000 others (including a few British POWs). In this largest and worst of all the Nazi concentration camps, 210,000 prisoners died of starvation and abuse.

When Germany invaded Poland in September 1939, it gained control of about 2 million Jews in the occupied territory. The rest of Poland was occupied by the Soviet Union, which had control of the rest of Poland's pre-war population of 3.3–3.5 million Jews.[141] German plans for Poland included expelling gentile Poles from large areas, confining Jews, and settling Germans on the emptied lands.[142] The Germans initiated a policy of sending Jews from all territories they had recently annexed (Austria, Czechoslovakia, and western Poland) to the central section of Poland, which they called the General Government. There, the Jews were concentrated in ghettos in major cities,[143] chosen for their railway lines to facilitate later deportation.[144] Food supplies were restricted, public hygiene was difficult, and the inhabitants were often subjected to forced labor.[145] In the work camps and ghettos, at least half a million Jews died of starvation, disease, and poor living conditions.[146] Jeremy Black writes that the ghettos were not intended, in 1939, as a step towards the extermination of the Jews. Instead, they were viewed as part of a policy of creating a territorial reservation to contain them.[147][l]
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.

The Nazis regarded the Slavs as subhuman, or Untermenschen.[426] In a secret memorandum dated 25 May 1940, Himmler stated that it was in German interests to foster divisions between the ethnic groups in the East. He wanted to restrict non-Germans in the conquered territories to schools that would only teach them how to write their own name, count up to 500, and obey Germans.[427][y] In November 1939 German planners called for "the complete destruction" of all Poles[430] and resettlement of the land by German colonists.[431] The Polish political leadership was the target of a campaign of murder (Intelligenzaktion and AB-Aktion).[432] Between 1.8 and 1.9 million non-Jewish Polish citizens perished at German hands during the course of the war; about four-fifths were ethnic Poles and the rest Ukrainians and Belarusians.[410] At least 200,000 died in concentration camps, around 146,000 in Auschwitz. Others died in massacres or in uprisings such as the Warsaw Uprising, where 120,000–200,000 were killed.[433] During the occupation, the Germans adopted a policy of restricting food and medical services, as well as degrading sanitation and public hygiene.[434] The death rate rose from 13 per 1000 before the war to 18 per 1000 during the war.[435] Around 6 million of World War II victims were Polish citizens; half the death toll were Jews.[436] Over the course of the war Poland lost 20 percent of its pre-war population.[436] Over 90 percent of the death toll came through non-military losses, through various deliberate actions by Germany and the Soviet Union.[433] Polish children were also kidnapped by Germans to be "Germanized", with perhaps as many as 200,000 children stolen from their families.[437]
Mengele's work also involved carrying out selections, a task that he chose to perform even when he was not assigned to do so, in the hope of finding subjects for his experiments,[33] with a particular interest in locating sets of twins.[34] In contrast to most of the other SS doctors, who viewed selections as one of their most stressful and unpleasant duties, he undertook the task with a flamboyant air, often smiling or whistling a tune.[35][31] He was also one of the SS doctors responsible for supervising the administration of Zyklon B, the cyanide-based pesticide that was used for the mass killings in the Birkenau gas chambers. He served in this capacity at the gas chambers located in crematoria IV and V.[36]