In August 1944 a women's camp opened inside Dachau. In the last months of the war, the conditions at Dachau deteriorated. As Allied forces advanced toward Germany, the Germans began to move prisoners from concentration camps near the front to more centrally located camps. They hoped to prevent the liberation of large numbers of prisoners. Transports from the evacuated camps arrived continuously at Dachau. After days of travel with little or no food or water, the prisoners arrived weak and exhausted, often near death. Typhus epidemics became a serious problem as a result of overcrowding, poor sanitary conditions, insufficient provisions, and the weakened state of the prisoners.
On June 6, 1944, also known as D-Day, more than 150,000 Allied soldiers landed in France. In December the Germans started an unsuccessful counterattack in Belgium and northern France, known as the Battle of the Bulge. Continuing to gain momentum, the Soviets began an offensive in January 1945, liberating western Poland and then forcing Hungary to surrender.
Between the years 1933 and 1945, more than 3.5 million Germans were imprisoned in such concentration camps or prison for political reasons. Approximately 77,000 Germans were killed for one or another form of resistance by Special Courts, courts-martial, and the civil justice system. Many of these Germans had served in government, the military, or in civil positions, which were considered to enable them to engage in subversion and conspiracy against the Nazis.
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.