NS Germany (informally called Nazi Germany) or rather seen and known as the Third Reich, is a time period between 1933 and 1945 in which Germany became a National Socialist authoritarian government under Führer Adolf Hitler and the NSDAP. In 1945, Germany came to an end and it's National Socialist government after Allied Forces destroyed them in May of 1945, which put an end to World War II.
Führer Adolf Hitler became the new leader/Chancellor of Germany under former leader of the Weimar Republic, Paul von Hindenburg in 1933. Soon after, the National Socialist Party removed all other parties by force and became the only party that existed in Germany with very minor parties. Hitler was above the law and had all the power of Germany in which he commanded.