The Reich Main Security Office (RSHA) was a key agency in Nazi Germany, established in 1939. It was responsible for coordinating the activities of various security and intelligence organizations, including the Gestapo and the Criminal Police. The RSHA played a crucial role in the enforcement of Nazi policies, particularly those related to political repression and the persecution of Jews and other targeted groups. Led by Reinhard Heydrich, the RSHA operated under the SS (Schutzstaffel) and was instrumental in implementing the regime's security measures. Its functions included intelligence gathering, counterintelligence, and the management of concentration camps. The RSHA's activities contributed significantly to the oppressive atmosphere of the Nazi regime.