There were massive efforts to help the survivors with food and medical treatment, led by Brigadier Glyn Hughes, Deputy Director of Medical Services of 2nd Army, and James Johnston, the Senior Medical Officer. Despite their efforts, about another 9,000 died in April, and by the end of June 1945 another 4,000 had died. (After liberation 13,994 people died.):305
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.
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.
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.