Hitler's Nazi regime refers to the totalitarian government led by Adolf Hitler and the National Socialist German Workers' Party (NSDAP) in Germany from 1933 to 1945. This regime was characterized by its extreme nationalism, militarism, and a racially driven ideology that culminated in the genocide of six million Jews and millions of others deemed 'undesirable.' The impact of this regime significantly shaped global conflicts in the 20th century, leading to World War II and the Holocaust.