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.

Immediately after liberation, West European Jews who survived the Holocaust generally returned to their countries of origin. Holocaust survivors who tried to return to their homes in Eastern Europe faced many more difficulties. The Nazi destruction in the East had been all-encompassing. Many survivors, particularly in Eastern Europe, continued to encounter antisemitism when they returned to their communities. In some places survivors who had returned home met with violent hostility. In Kielce, 42 Jews who had survived the Holocaust were killed by local Poles in a pogrom on July 4, 1946.
The Nazis used the phrase Lebensunwertes Leben (life unworthy of life) in reference to the disabled and mentally ill.[92] On 14 July 1933, the Law for the Prevention of Hereditarily Diseased Offspring (Gesetz zur Verhütung erbkranken Nachwuchses), the Sterilization Law, was passed, allowing for compulsory sterilization.[93][94] The New York Times reported on 21 December that year: "400,000 Germans to be sterilized".[95] There were 84,525 applications from doctors in the first year. The courts reached a decision in 64,499 of those cases; 56,244 were in favor of sterilization.[96] Estimates for the number of involuntary sterilizations during the whole of the Third Reich range from 300,000 to 400,000.[97]
After 1945 the name was applied to the displaced persons camp established nearby, but it is most commonly associated with the concentration camp. From 1941 to 1945, almost 20,000 Soviet prisoners of war and a further 50,000 inmates died there.[3] Overcrowding, lack of food and poor sanitary conditions caused outbreaks of typhus, tuberculosis, typhoid fever and dysentery, leading to the deaths of more than 35,000 people in the first few months of 1945, shortly before and after the liberation.