While these massacres were happening, the Nazis elsewhere were laying plans for an overall 'solution to the Jewish question'. Death camp operations began in December 1941 at Semlin in Serbia and Chelmno in Poland, where people were killed by exhaust fumes in specially modified vans, which were then driven to nearby sites where the bodies were plundered and burnt. 250,000 Jews were killed this way at Chelmno and 15,000 at Semlin.
Also set for extermination were members of any group considered by Hitler to be ill-equipped to reside in the new Germany. Among them were artists, intellectuals and other independent thinkers; communists, Jehovah’s Witnesses and others who were ideologically opposed to the Nazi Party; homosexuals and others who were viewed as sexually deviant; Gypsies; the physically and mentally handicapped; and anyone else considered to be racially or physically impure. (Between 1941 and 1944, several thousand sick and handicapped Dachau prisoners were sent to a Nazi “euthanasia” center in Hartheim, Austria, where they were put to death by exposure to lethal gas).
Hitlers most famous victim Anne Frank ended up in Bergen-Belsen after being evacuated from Auschwitz in October, 1944. As starvation. cold and disease swept through the camp's population, Margot, Anne's sister, developed typhus and died. A few days later, Anne herself, in April, 1945, succumbed to the disease a few weeks before the camp was liberated by the British. She was 15 years old ...
On April 26, 1945, as American forces approached, there were 67,665 registered prisoners in Dachau and its subcamps. More than half of this number were in the main camp. Of these, 43,350 were categorized as political prisoners, while 22,100 were Jews, with the remainder falling into various other categories. Starting that day, the Germans forced more than 7,000 prisoners, mostly Jews, on a death march from Dachau to Tegernsee far to the south. During the death march, the Germans shot anyone who could no longer continue; many also died of hunger, cold, or exhaustion.
The workers who constructed the original buildings were housed in camps near Fallingbostel and Bergen, the latter being the so-called Bergen-Belsen Army Construction Camp. Once the military complex was completed in 1938/39, the workers' camp fell into disuse. However, after the German invasion of Poland in September 1939, the Wehrmacht began using the huts as a prisoner of war (POW) camp.