After the regular guards had escaped from the camp on the day before the liberation, 128 SS soldiers who had been imprisoned in a special wing of the Dachau bunker were released and ordered to serve as guards until the Americans arrived to take over the camp. 2nd Lt. Wicker had stayed behind when the other guards escaped because his mother was staying at the Dachau garrison, visiting him. Wicker's mother reported him missing after the war, and it is presumed that he was killed after he surrendered the camp to the Americans.
Killing on a mass scale using gas chambers or gas vans was the main difference between the extermination and concentration camps. From the end of 1941, the Germans built six extermination camps in occupied Poland: Auschwitz II-Birkenau, Majdanek, Chełmno, and the three Operation Reinhard camps at Belzec, Sobibor, and Treblinka II. Maly Trostenets, a concentration camp in the Reichskommissariat Ostland, became a killing centre in 1942. Gerlach writes that over three million Jews were murdered in 1942, the year that "marked the peak" of the mass murder of Jews. At least 1.4 million of these were in the General Government area of Poland.
In March 1951, the government of Israel requested $1.5 billion from the Federal Republic of Germany to finance the rehabilitation of 500,000 Jewish survivors, arguing that Germany had stolen $6 billion from the European Jews. Israelis were divided about the idea of taking money from Germany. The Conference on Jewish Material Claims Against Germany (known as the Claims Conference) was opened in New York, and after negotiations, the claim was reduced to $845 million.
In 1935 the Wehrmacht began to build a large military complex close to the village of Belsen, a part of the town of Bergen, in what was then the Province of Hanover. This became the largest military training area in Germany of the time and was used for armoured vehicle training. The barracks were finished in 1937. The camp has been in continuous operation since then and is today known as Bergen-Hohne Training Area. It is used by the NATO armed forces.