Adolf Hitler was a German politician and leader of the Nazi Party (Nationalsozialistische Deutsche Arbeiterpartei; NSDAP). He rose to power to become dictator of Germany, serving as Chancellor from 1933 and Führer ("Leader") from 1934. During his dictatorship from 1933 to 1945, he initiated World War II in Europe by invading Poland in September 1939. He closely supervised military operations during the war and by December 1941 had full control of all strategic decisions, especially on the Eastern Front. He was central to the perpetration of the Holocaust.