In October 1939 Hitler signed a "euthanasia decree" backdated to 1 September 1939 that authorized Reichsleiter Philipp Bouhler, the chief of Hitler's Chancellery, and Karl Brandt, Hitler's personal physician, to carry out a program of involuntary "euthanasia"; after the war this program was named Aktion T4. It was named after Tiergartenstraße 4, the address of a villa in the Berlin borough of Tiergarten, where the various organizations involved were headquartered. T4 was mainly directed at adults, but the "euthanasia" of children was also carried out. Between 1939 and 1941, 80,000 to 100,000 mentally ill adults in institutions were killed, as were 5,000 children and 1,000 Jews, also in institutions. In addition there were specialized killing centres, where the deaths were estimated at 20,000, according to Georg Renno, the deputy director of Schloss Hartheim, one of the "euthanasia" centers, or 400,000, according to Frank Zeireis, the commandant of the Mauthausen concentration camp. Overall, the number of mentally and physically handicapped murdered was about 150,000.
On April 18, 1945, the burial of the dead began. The staff members, who were now prisoners of the British, were ordered to do the work of burying the bodies. The British deliberately forced the SS staff to use only their bare hands to handle the corpses of prisoners who had died of contagious diseases. In the documentary film which was shown in the newsreels in theaters around the world, a British officer said that the Germans were being punished by not allowing them to use gloves to handle the bodies. According to Eberhard Kolb, 20 out of the 80 guards, who were forced to handle diseased bodies without wearing protective gear, died later and the majority of the deaths were from typhus.
After the evacuation process began in February 1942, there were only a few Jews left in any of the camps in Germany, including Dachau. On April 29, 1945 when Dachau was liberated, there were 2,539 Jews in the main camp, including 225 women, according to the US Army census. Most of them had arrived only weeks or even days before, after they were evacuated from the Dachau sub-camps, mainly the Kaufering camps near Landsberg am Lech, where they had been forced to work in building underground factories for the manufacture of Messerschmitt airplanes.
Gun did not explain how these 300 prisoners died on the night of the liberation of the camp, but he did write that the prisoners had weapons and that the International Committee of Dachau had made sure that the prisoners who had cooperated with the German guards were not allowed to escape. Others may have died from eating too much of the canned food and chocolate given to them by the Americans, and undoubtedly there were deaths among the 900 prisoners sick with typhus in the infirmary.
In March 1944, part of the camp was redesignated as an Erholungslager ("recovery camp"), where prisoners too sick to work were brought from other concentration camps. They were in Belsen supposedly to recover and then return to their original camps and resume work, but many of them died in Belsen of disease, starvation, exhaustion and lack of medical attention.
Czeslawa Kwoka, age 14, appears in a prisoner identity photo provided by the Auschwitz Museum, taken by Wilhelm Brasse while working in the photography department at Auschwitz, the Nazi-run death camp where some 1.5 million people, most of them Jewish, died during World War II. Czeslawa was a Polish Catholic girl, from Wolka Zlojecka, Poland, who was sent to Auschwitz with her mother in December of 1942. Within three months, both were dead. Photographer (and fellow prisoner) Brasse recalled photographing Czeslawa in a 2005 documentary: "She was so young and so terrified. The girl didn't understand why she was there and she couldn't understand what was being said to her. So this woman Kapo (a prisoner overseer) took a stick and beat her about the face. This German woman was just taking out her anger on the girl. Such a beautiful young girl, so innocent. She cried but she could do nothing. Before the photograph was taken, the girl dried her tears and the blood from the cut on her lip. To tell you the truth, I felt as if I was being hit myself but I couldn't interfere. It would have been fatal for me." #
The never-ending rumors surrounding these early concentration camps instilled a nagging sense of fear among all Germans that helped to extinguish all potential opposition and criticism of Hitler's regime. However, the greatest challenge to Hitler would not come from his political opponents but from within his own ranks. By early 1934, a storm trooper rebellion was brewing that threatened to ruin everything he had worked so hard to achieve.
The camp was liberated on April 15, 1945, by the British 11th Armoured Division. The soldiers discovered approximately 60,000 prisoners inside, most of them half-starved and seriously ill, and another 13,000 corpses, including those of Anne and Margot Frank, lying around the camp unburied. The horrors of the camp, documented on film and in pictures, made the name "Belsen" emblematic of Nazi crimes in general for public opinion in many countries in the immediate post-1945 period. Today, there is a memorial with an exhibition hall at the site.