Holocaust at Peak
Between 1943 and 1945, the Nazi regime's systematic murder of European Jews reached its final and most destructive phase, even as Germany began losing the war. The Holocaust, in which roughly six million Jews were killed, remains the defining example of state-organized genocide in modern history. Its scale, bureaucratic organization, and industrial methods continue to shape debates about human rights, international law, and the prevention of mass atrocity.
The roots of the genocide lay in Nazi ideology, which cast Jews as a racial enemy, and in years of escalating persecution after Hitler took power in 1933: boycotts, the Nuremberg Laws of 1935, the violence of Kristallnacht in 1938, and forced ghettoization after the invasion of Poland in 1939. Mass shootings by SS units, police battalions, and local collaborators followed the invasion of the Soviet Union in 1941. By late 1941 and early 1942, the leadership had moved toward a continent-wide program of extermination, coordinated at the Wannsee Conference in January 1942.
By 1943 the machinery was fully established. Camps built chiefly for killing, including Treblinka, Sobibor, and Belzec, had already murdered the great majority of Polish Jewry in Operation Reinhard, while Auschwitz-Birkenau combined a killing center with a vast forced-labor complex. Trains carried Jews from across occupied Europe, and many victims were murdered in gas chambers soon after arrival. Claims about daily killing figures vary by camp and period, and the often-cited figure of 10,000 per day reflects peak capacity at Auschwitz in some periods rather than a constant rate. The mass deportation of Hungarian Jews in 1944, mostly to Auschwitz, was among the last great waves of killing.
Resistance occurred despite overwhelming odds, including the Warsaw Ghetto Uprising in 1943 and revolts at Treblinka, Sobibor, and Auschwitz. Some individuals and communities hid or rescued Jews at great personal risk, though most governments and populations did not intervene. As Soviet and Allied forces advanced in 1944 and 1945, the SS tried to destroy evidence and forced surviving prisoners on death marches, in which many thousands more died. Camps were liberated beginning with Majdanek in 1944 and Auschwitz in January 1945.
The six million figure is a historians' estimate, based on Nazi records, census data, and postwar research, and most scholars place it between roughly five and six million. Millions of others, including Roma, disabled people, Polish and Soviet civilians, and prisoners of war, were also killed by the regime. The postwar Nuremberg Trials established principles of individual accountability for crimes against humanity, and the 1948 Genocide Convention followed. The Holocaust also influenced the founding of Israel, the development of human rights law, and the ongoing work of remembrance and education.