Long ago, a group of men did very bad things. 
During a big war, a group of men did very bad things. 


During World War II, a group of men did terrible things. They were called the Einsatzgruppen, or task forces. 
First, they went into Poland in 1939. They targeted leaders like teachers and priests. They also hurt many Jews and Romani people. 

Some of these groups used gas vans to kill people. A gas van was a vehicle that used gas to kill. The German army helped these groups by providing supplies.
After the war, many leaders of these task forces were caught. They went to a special trial in 1947. A court found them guilty of crimes against humanity. Fourteen men were given death sentences. 
The Einsatzgruppen were special task forces used by Nazi Germany. 

These groups worked in a specific way during the war. They often moved right behind the German army. 

These task forces began to form quite early. They first appeared in Austria in March 1938. 
Many specific events and numbers show how large this was. In Poland, the groups killed about 65,000 civilians by the end of 1939. At the Babi Yar site, 33,771 Jews were killed in just two days. In another place called Rumbula, about 25,000 Jews died in two days. 
After World War II ended, the world held them accountable. In 1947, a special trial began for the leaders. 
The Einsatzgruppen were paramilitary death squads used by Nazi Germany during World War II. 

The mechanism of these operations involved close cooperation between different Nazi agencies. The Einsatzgruppen operated under the direction of Heinrich Himmler and the supervision of Reinhard Heydrich. They often moved in the wake of the Wehrmacht, which was the German armed forces. The Wehrmacht provided essential logistical support, such as transport and supplies, to help the squads function. 
The Einsatzgruppen were organized into specific structures to manage their widespread activities. Each large unit was subdivided into smaller subgroups called Einsatzkommandos. For example, in Poland, there were seven large units, each containing about 500 men. These were further split into five smaller subgroups, or Einsatzkommandos, of about 100 men each. 
The history of these groups began even before the start of World War II. They originated from ad hoc units formed by Heydrich in Austria in March 1938. These early groups were used to secure government buildings and documents. In late 1938, units were stationed in the Sudetenland to confiscate papers and arrest citizens. By September 1939, the Reich Security Main Office took overall command of the groups. They were then used during the invasion of Poland to target the Polish intelligentsia, including teachers and clergy.
During the invasion of the Soviet Union in June 1941, the scale of the violence increased significantly. The Einsatzgruppen were assigned "special tasks" to liquidate Soviet political leaders and Jewish populations. They used various methods to carry out mass killings, primarily shooting civilians. In some instances, they utilized gas vans to kill people. The impact of these actions was massive and reached millions of people. Historian Raul Hilberg estimated that these groups and related agencies murdered more than two million people between 1941 and 1945. This total included 1.3 million Jews out of the 5.5 to 6 million murdered during the Holocaust.
Specific massacres highlight the extreme nature of their operations. At Babi Yar, 33,771 Jews were murdered in only two days. In the Rumbula massacre, approximately 25,000 Jews were killed during two days of shooting. 
After the war, the international community sought justice through legal proceedings. In 1947 and 1948, the Einsatzgruppen trial was held to prosecute the leaders for war crimes and crimes against humanity. 
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