Answer :

The Einsatzgruppen were mobile killing squads deployed by Nazi Germany during World War II. Here is a breakdown of what they were and what they did:

1. Purpose: The Einsatzgruppen were tasked with carrying out mass killings, primarily targeting Jewish populations, but also other groups deemed undesirable by the Nazi regime such as intellectuals, Romani people, and Soviet officials.

2. Operations: These units operated behind the front lines in German-occupied territories, particularly in Eastern Europe. They followed the German army as it advanced, rounding up and executing civilians.

3. Methods: The Einsatzgruppen used various methods to carry out their atrocities, including shootings, mass shootings in pits, gas vans, and other brutal means of killing.

4. Significance: Their actions were a key part of the Holocaust, leading to the murder of millions of people. The Einsatzgruppen played a crucial role in the implementation of Hitler's "Final Solution," which aimed to exterminate European Jews.

Overall, the Einsatzgruppen were a brutal tool of Nazi genocide, responsible for the deaths of countless innocent civilians during World War II.