The Holocaust

Overview

The Holocaust (1933–1945) — “the Shoah,” the Hebrew word for “catastrophe” — was the systematic, state-sponsored persecution and murder of six million European Jews by the Nazi German regime and its allies and collaborators (USHMM). It was not a single event but an evolving process across Europe: it began when Adolf Hitler and the Nazi Party came to power in January 1933 and ended with the Allied defeat of Nazi Germany in May 1945, in the middle of World War II (USHMM).

The scale is what the numbers say plainly: Europe’s Jewish population numbered 9 million in 1933; by 1945 six million were dead — nearly two out of every three European Jews (USHMM). The killing the Nazis called the “Final Solution to the Jewish Question” was implemented between 1941 and 1945, and the vast majority of the victims were murdered in that window (USHMM).

From persecution to genocide, in stages

The Nazis did not begin with mass murder. When they took power they “quickly began using the government to target and exclude Jews from German society” — discriminatory laws, economic boycotts like the April 1933 boycott of Jewish-owned shops, and organized violence — and the persecution “became increasingly radical between 1933 and 1945” (USHMM). The fall 1935 Nuremberg Race Laws stripped German Jews of citizenship; the regime pressed Jews to emigrate throughout the 1930s (USHMM).

The September 1939 invasion of Poland escalated anti-Jewish policy to imprisonment and eventual murder: the first ghettos were established in 1939–1940 in German-occupied Poland — enclosed, overcrowded districts where Jews were isolated, controlled, and starved (USHMM). Eventually the Nazis and their allies established more than 1,300 ghettos, most in occupied Poland, the Baltic states, and the occupied Soviet Union (USHMM). Beginning in 1941–1942, ghetto residents were murdered en masse and the ghettos “liquidated” — shot at nearby killing sites or deported to killing centers (USHMM).

The decisive turn came with the June 1941 invasion of the Soviet Union. SS and police mobile killing units began massacring entire Jewish communities — at first men of military age, then whole communities by August 1941 — and by autumn 1941 introduced mobile gas vans (USHMM). One fact the sources emphasize as a limit of knowledge: “It is unclear when exactly Hitler decided to murder Europe’s Jews. The decision was probably made sometime in 1941, with the invasion of the Soviet Union” (USHMM). The 20 January 1942 Wannsee Conference, chaired by Reinhard Heydrich with senior police and civilian officials, did not make the decision — it “discussed the continuing implementation” of a murder already underway (USHMM).

How the murder was organized

Method	Where and how	Victims
Mass shootings	Einsatzgruppen, Order Police, Waffen-SS, and local auxiliaries across eastern Europe — more than 1,500 cities, towns, and villages; Wehrmacht logistical support	Up to 2 million Jews, shot into pits or killed in gas vans
Killing centers	Five purpose-built centers in occupied Poland: Chełmno, Bełżec, Sobibór, Treblinka, Auschwitz-Birkenau; deportations by rail disguised as “resettlement”	Nearly 2.7 million Jews, mostly gassed on arrival
Ghettos, camps, death marches	Starvation, disease, forced labor, beatings; January 1945 death marches from Auschwitz and Stutthof as the Reich collapsed	Hundreds of thousands

The rail system was central: Jews from across Europe were deported to the killing centers in freight cars, often standing for days without food, water, or sanitation, told they were being “resettled to the east” (USHMM). The deportations required the coordination of the Reich Security Main Office, the Transport Ministry, and the Foreign Office (USHMM). At Auschwitz-Birkenau alone — designated a killing facility in spring 1942 — the SS murdered approximately one million Jews from various European countries (USHMM). Under Operation Reinhard, three centers (Bełżec, Sobibór, Treblinka) were built solely for mass murder; at Chełmno, at least 152,000 Jews and about 4,300 Roma were killed in gas vans (USHMM).

Responsibility ran through the whole regime. “At the highest level, Adolf Hitler inspired, ordered, approved, and supported the genocide,” but he “did not act alone” and “did not lay out an exact plan” — Hermann Göring, Heinrich Himmler, Reinhard Heydrich, and Adolf Eichmann coordinated, planned, and implemented it, relying on the SS, the Gestapo, the Order Police, the Wehrmacht, the railways, the civil service, and German businesses (USHMM). Nazi Germany’s allies and collaborators — Vichy France, local bureaucracies and police forces, auxiliary units — rounded up, interned, and deported Jews even in countries not allied with Germany (USHMM). And “millions of Germans and other Europeans participated”; without them, the USHMM states, the genocide “would not have been possible” (USHMM).

Who else the Nazis targeted

The Holocaust specifically refers to the murder of the six million Jews, but “there were also millions of other victims of Nazi persecution and murder” (USHMM). Political opponents were the first concentration-camp inmates; Jehovah’s Witnesses were imprisoned for refusing loyalty oaths and military service; men accused of homosexuality, so-called asocials, and habitual criminals filled prisons and camps (USHMM). Disabled people were murdered in the “Euthanasia” Program; Roma, Poles (especially the intelligentsia), Soviet officials, and Soviet prisoners of war were subjected to mass murder (USHMM).

The Holocaust ended in May 1945 when the Allied Powers — Great Britain, the United States, and the Soviet Union — defeated Nazi Germany (USHMM). Soviet forces reached Majdanek in July 1944, the first major camp liberated; US forces liberated Buchenwald, Dachau, and Mauthausen; British forces liberated Bergen-Belsen (USHMM). At the end of 1946, some 250,000 Jewish displaced persons remained in camps in Germany, Austria, and Italy (USHMM).

Frequently asked questions

What does “Final Solution” mean?

It was a euphemism used by Nazi Germany’s leaders for the mass murder of Europe’s Jews — “the deliberate and systematic mass murder of European Jews,” the last stage of the Holocaust, carried out from 1941 to 1945 (USHMM). The bureaucratic language — “evacuation,” “resettlement to the east” — disguised deportation to killing centers.

Did the Wannsee Conference order the Holocaust?

No. By 20 January 1942, when Reinhard Heydrich chaired the secret meeting, mass murder was already underway — the conference “discussed the continuing implementation” of the Final Solution among leading police and civilian officials (USHMM). The decision itself was “probably made sometime in 1941,” and its exact date is not known (USHMM).

How many Jews were killed, and how?

Six million — two-thirds of Europe’s prewar Jewish population (USHMM). Up to 2 million were murdered in mass shootings and gas vans across eastern Europe, and nearly 2.7 million at the five killing centers, mostly gassed on arrival (USHMM).

Who was responsible?

Hitler “inspired, ordered, approved, and supported the genocide,” while Göring, Himmler, Heydrich, and Eichmann coordinated it — but the USHMM stresses that “millions of Germans and other Europeans participated,” through German institutions, Axis allies, local collaborators, denunciations, plunder, and bystander indifference (USHMM).

What this profile does not claim

This profile does not name a single date on which the “Final Solution” was decided — the sources say the exact date is not known, only that the decision probably came in 1941. It does not give a single total for non-Jewish victims; the sources say “millions” and no further. It does not give camp-by-camp death tolls beyond the figures the sources state (Chełmno, Auschwitz-Birkenau). It does not retell the historiographical debate over how the decision was made; it reports the USHMM’s account. And it treats the end of the Holocaust at the level the sources support — liberation, death marches, displaced persons — without attempting a full history of the war’s final months, which belongs to the World War II profile.