Of a total of 2,720 clergy recorded as imprisoned at Dachau, the overwhelming majority, some 2,579 (or 94.88%) were Catholic. Among the other denominations, there were 109 Protestants, 22 Greek Orthodox, 8 Old Catholics and Mariavites and 2 Muslims. In his Dachau: The Official History 1933–1945, Paul Berben noted that R. Schnabel's 1966 investigation, Die Frommen in der Hölle ("The Pious Ones in Hell") found an alternative total of 2,771 and included the fate all the clergy listed, with 692 noted as deceased and 336 sent out on "invalid trainloads" and therefore presumed dead.[58]:276–277 Over 400 German priests were sent to Dachau.[59] Total numbers incarcerated are nonetheless difficult to assert, for some clergy were not recognised as such by the camp authorities, and some—particularly Poles—did not wish to be identified as such, fearing they would be mistreated.[58]:157
Raphael Lemkin, a holocaust survivor who worked on the Nuremberg Trials, coined the term genocide and spent 4 years pushing for it to be added to international law. As Champetier de Ribes, the French Prosecutor at the Nuremberg Trials explained “This [was] a crime so monstrous, so undreamt of in history throughout the Christian era up to the birth of Hitlerism that the term ‘genocide’ has had to be coined to define it.” Ultimately, in 1948 The United Nations Convention on the Prevention and Punishment of Genocide was adopted, and it entered into force in 1951. The convention defined genocide in legal terms based on Lemkin’s work, and is the basis for genocide prevention efforts today.
After the German surrender on May 7, 1945, the American Army took over the barracks of the SS garrison and set up a command post called Eastman which they occupied until 1973. On the orders of General Dwight D. Eisenhower, all available American soldiers were brought to Dachau so that they could be eye-witnesses to the existence of the homicidal gas chamber, disguised as a shower room.

Many of the prisoners at Bergen Belsen arrived there on death marches from other concentration camps. During Summer 1944, as the British and American Armies advanced in their fight against Germany from the West and the Soviet army advanced in its fight against Germany from the East, the Nazis began liquidating concentration camps, sending prisoners on death marches. They forced prisoners of concentration camps to march over long distances, under unbearable conditions. Prisoners were abused, and sometimes killed, by the guards that accompanied them. 

Following the German invasion of the Soviet Union on June 22, 1941, Russian Prisoners of War were sent to Dachau. On Hitler's orders, Russian POWs who were determined to be Communist Commissars were executed at Dachau and other major concentration camps in Germany. The Communist Soviet Union had both political Commissars and military Commissars whose job it was to keep their citizens or soldiers in line. The military Commissars were stationed behind the front lines in order to urge reluctant Soviet soldiers forward since only one out of every 5 men had been furnished with a rifle. The Soviet soldiers were expected to pick up a rifle after another soldier had been shot; those who tried to retreat were shot by the Commissars. If captured, the Commissars were under orders to organize an escape or otherwise create havoc in the POW camp.
On 1 August 1940, Governor-General Hans Frank issued a decree requiring all Kraków Jews to leave the city within two weeks. Only those who had jobs directly related to the German war effort would be allowed to stay. Of the 60,000 to 80,000 Jews then living in the city, only 15,000 remained by March 1941. These Jews were then forced to leave their traditional neighbourhood of Kazimierz and relocate to the walled Kraków Ghetto, established in the industrial Podgórze district.[41][42] Schindler's workers travelled on foot to and from the ghetto each day to their jobs at the factory.[43] Enlargements to the facility in the four years Schindler was in charge included the addition of an outpatient clinic, co-op, kitchen, and dining room for the workers, in addition to expansion of the factory and its related office space.[44]
On June 6, 1944, also known as D-Day, more than 150,000 Allied soldiers landed in France. In December the Germans started an unsuccessful counterattack in Belgium and northern France, known as the Battle of the Bulge. Continuing to gain momentum, the Soviets began an offensive in January 1945, liberating western Poland and then forcing Hungary to surrender.
Demographic statistics vary but they are in the same general range. History will likely never know how many people were interned or died there, due to periods of disruption. One source gives a general estimate of over 200,000 prisoners from more than 30 countries for the Third Reich's years, of whom two-thirds were political prisoners, including many Catholic priests, and nearly one-third were Jews. 25,613 prisoners are believed to have died in the camp and almost another 10,000 in its subcamps,[16] primarily from disease, malnutrition and suicide. In late 1944, a typhus epidemic occurred in the camp caused by poor sanitation and overcrowding, which caused more than 15,000 deaths.[17] It was followed by an evacuation, in which large numbers of the prisoners died. Toward the end of the war, death marches to and from the camp caused the deaths of numerous unrecorded prisoners. After liberation, prisoners weakened beyond recovery by the starvation conditions continued to die.[18] Two thousand cases of "the dread black typhus" had already been identified by 3 May, and the U.S. Seventh Army was "working day and night to alleviate the appalling conditions at the camp".[19] Prisoners with typhus, a louse-borne disease with an incubation period from 12 to 18 days, were treated by the 116th Evacuation Hospital, while the 127th would be the general hospital for the other illnesses. There were 227 documented deaths among the 2,252 patients cared for by the 127th.[18]
Most of the regular SS guards and the administrative staff had fled from the camp the next day and there was no one left to oversee the burial of the bodies. No precise figures are available, but the train had started out with approximately 4,500 to 6,000 prisoners on board and between 1,300 and 2,600 had made it to Dachau still alive. Some of the dead had been buried along the way, or left in rows alongside the tracks. The gruesome sight of the death train, with some of the corpses in the open cars riddled by bullets, so affected the young soldiers of the 45th Thunderbird Division that they executed Waffen-SS soldiers stationed at the Dachau garrison after they had surrendered.
Owing to repeated transports from the front, the camp was constantly overcrowded and the hygiene conditions were beneath human dignity. Starting from the end of 1944 up to the day of liberation, 15,000 people died, about half of all the prisoners held at KZ Dachau. Five hundred Soviet POWs were executed by firing squad. The first shipment of women came from Auschwitz-Birkenau.[40]

On April 29, 1945, SS 2nd Lt. Heinrich Wicker surrendered the camp to the 42nd Rainbow Division of the US Seventh Army, which had found the camp on its way to take the city of Munich, 18 kilometers to the south. Accompanied by Red Cross representative Victor Maurer, 2nd Lt. Wicker surrendered the Dachau concentration camp to Brigadier General Henning Linden, commander of the 42nd Rainbow Division, under a white flag of truce. The 45th Thunderbird Division of the US Seventh Army also participated in the liberation of Dachau, arriving at the nearby SS garrison before the 42nd Division approached the installations's main entrance on the south side of the Dachau complex where 2nd Lt. Wicker was waiting to surrender the camp.

There were an additional 37,223 prisoners counted in the sub-camps near Dachau on April 26, 1945, the date of the last roll call. According to the US Army Report, there were approximately 7,000 prisoners who arrived at Dachau after April 26, 1945 who were not registered in the camp. They were prisoners from the sub-camps who had been evacuated to the main camp. One group of prisoners from a subcamp arrived on April 28th, escorted by Otto Moll, a notorious SS man who had formerly worked in the Auschwitz death camp.
In January 1941, Dachau was designated a Class I camp and Buchenwald became a Class II camp; Mauthausen and Gusen in Austria were the only Class III camps in the Nazi system. The Class I designation meant that treatment of the inmates was less harsh and that prisoners had a better chance of being released. Dachau was the best of the Nazis camps, as far as the treatment of the prisoners was concerned.

On January 20, 1942, Reinhard Heydrich convened the Wannsee Conference at a lakeside villa in Berlin to organize the “final solution to the Jewish question.” Around the table were 15 men representing government agencies necessary to implement so bold and sweeping a policy. The language of the meeting was clear, but the meeting notes were circumspect:

Bergen-Belsen was a concentration camp near Hanover in northwest Germany, located between the villages of Bergen and Belsen. Built in 1940, it was a prisoner-of-war camp for French and Belgium prisoners. In 1941, it was renamed Stalag 311 and housed about 20,000 Russian prisoners. The POW portion of the camp remained in operation until January 1945.
Holocaust, Hebrew Shoʾah (“Catastrophe”), Yiddish and Hebrew Ḥurban (“Destruction”), the systematic state-sponsored killing of six million Jewish men, women, and children and millions of others by Nazi Germany and its collaborators during World War II. The Germans called this “the final solution to the Jewish question.” Yiddish-speaking Jews and survivors in the years immediately following their liberation called the murder of the Jews the Ḥurban, the word used to describe the destruction of the First Temple in Jerusalem by the Babylonians in 586 bce and the destruction of the Second Temple by the Romans in 70 ce. Shoʾah (“Catastrophe”) is the term preferred by Israelis and the French, most especially after Claude Lanzmann’s masterful 1985 motion picture documentary of that title. It is also preferred by people who speak Hebrew and by those who want to be more particular about the Jewish experience or who are uncomfortable with the religious connotations of the word Holocaust. Less universal and more particular, Shoʾah emphasizes the annihilation of the Jews, not the totality of Nazi victims. More particular terms also were used by Raul Hilberg, who called his pioneering work The Destruction of the European Jews, and Lucy S. Dawidowicz, who entitled her book on the Holocaust The War Against the Jews. In part she showed how Germany fought two wars simultaneously: World War II and the racial war against the Jews. The Allies fought only the World War. The word Holocaust is derived from the Greek holokauston, a translation of the Hebrew word ʿolah, meaning a burnt sacrifice offered whole to God. This word was chosen because in the ultimate manifestation of the Nazi killing program—the extermination camps—the bodies of the victims were consumed whole in crematoria and open fires.
Dan Stone, a specialist in the historiography of the Holocaust, lists ethnic Poles, Ukrainians, Soviet prisoners of war, Jehovah's Witnesses, black Germans, and homosexuals as among the groups persecuted by the Nazis; he writes that the occupation of eastern Europe can also be viewed as genocidal. But the German attitude toward the Jews was different in kind, he argues. The Nazis regarded the Jews not as racially inferior, deviant, or enemy nationals, as they did other groups, but as a "Gegenrasse: a 'counter-race', that is to say, not really human at all". The Holocaust, for Stone, is therefore defined as the genocide of the Jews, although he argues that it cannot be "properly historically situated without understanding the 'Nazi empire' with its grandiose demographic plans".[d] Donald Niewyk and Francis Nicosia, in The Columbia Guide to the Holocaust (2000), favour a definition that focuses on the Jews, Roma, and Aktion T4 victims: "The Holocaust—that is, Nazi genocide—was the systematic, state-sponsored murder of entire groups determined by heredity. This applied to Jews, Gypsies, and the handicapped."[33]
The number of Afro-Germans in Germany when the Nazis came to power is variously estimated at 5,000–25,000.[454] It is not clear whether these figures included Asians. Although blacks, including prisoners of war, in Germany and German-occupied Europe were subjected to incarceration, sterilization, murder, and other abuse, there was no programme to kill them all as there was for the Jews.[455]
A portion of the concrete-lined ditch on the left in the photo above has been reconstructed and today visitors can cross a bridge which has been built over the ditch and the Würm river canal in the northwest corner of the camp in order to provide access to the gas chamber area which was outside the prison compound and hidden from the inmates by a line of poplar trees.
In 1946, Belsen served as the largest DP camp in Europe for more than 12,000 Jews; it was the only exclusively Jewish camp in the British zone of Germany. The refugees formed a camp committee within three days of liberation. Political, cultural and religious activities were organized by the committee, such as searching for relatives and spiritual rehabilitation. Jewish family life was renewed, more than twenty marriages were performed daily during the first few months. More than 2,000 children were born to survivors. An elementary school was founded in July 1945 and, by 1948, 340 students attended the school. In December 1945, a high school was started and was partly staffed by the Jewish brigade. A kindergarten, orphanage, yeshiva and religious school were also formed. ORT sponsored a vocational training school. The DPs also wrote the main Jewish newspaper, Unzer Shtimme (Our Voice), in the British zone.
Then as a last straw the Allies bombed the electric plant that pumped our water. Loads of food were unable to reach the camp because of the Allied fighters. Then things really got out of hand. During the last six weeks I have been helpless. I did not even have sufficient staff to bury the dead, let alone segregate the sick ... I tried to get medicines and food for the prisoners and I failed. I was swamped. I may have been hated, but I was doing my duty.
A hedonist and gambler by nature, Schindler soon adopted a profligate lifestyle, carousing into the small hours of the night, hobnobbing with high ranking SS-officers, and philandering with beautiful Polish women. Schindler seemed to be no different from other Germans who had come to Poland as part of the occupation administration and their associates. The only thing that set him apart from other war-profiteers, was his humane treatment of his workers, especially the Jews.
The superior race was the "Aryans," the Germans. The word Aryan, "derived from the study of linguistics, which started in the eighteenth century and at some point determined that the Indo-Germanic (also known as Aryan) languages were superior in their structures, variety, and vocabulary to the Semitic languages that had evolved in the Near East. This judgment led to a certain conjecture about the character of the peoples who spoke these languages; the conclusion was that the 'Aryan' peoples were likewise superior to the 'Semitic' ones" (Leni Yahil, The Holocaust: The Fate of European Jewry, New York: Oxford University Press, 1990, p. 36).
The British forced the former SS camp personnel to help bury the thousands of dead bodies in mass graves.[21] Some civil servants from Celle and Landkreis Celle were brought to Belsen and confronted with the crimes committed on their doorstep.[10]:262 Military photographers and cameramen of No. 5 Army Film and Photographic Unit documented the conditions in the camp and the measures of the British Army to ameliorate them. Many of the pictures they took and the films they made from April 15 to June 9, 1945 were published or shown abroad. Today, the originals are in the Imperial War Museum. These documents had a lasting impact on the international perception and memory of Nazi concentration camps to this day.[10]:243[21] According to Habbo Knoch, head of the institution that runs the memorial today: "Bergen-Belsen [...] became a synonym world-wide for German crimes committed during the time of Nazi rule."[10]:9