German Empire
The high command under Paul von Hindenburg and Erich Ludendorff increasingly controlled the country, but in October after the failed offensive in spring 1918, the German armies were in retreat, allies Austria-Hungary and the Ottoman Empire had collapsed, and Bulgaria had surrendered. The Empire collapsed in the November 1918 Revolution with the abdications of its monarchs. This left a postwar federal republic and a devastated and unsatisfied populace, which later led to the rise of Adolf Hitler and Nazism.
Nazi Germany
Nazi Germany is the common English name for Germany between 1933 and 1945, when Adolf Hitler and his Nazi Party (NSDAP) controlled the country through a dictatorship. Under Hitler's rule, Germany was transformed into a totalitarian state that controlled nearly all aspects of life via the "Gleichschaltung" legal process. The official name of the state was Deutsches Reich ("German Reich") until 1943 and Großdeutsches Reich ("Greater German Reich") from 1943 to 1945. Nazi Germany is also known as the Third Reich, from German "Drittes Reich", meaning "Third Realm" or "Third Empire", the first two being the Holy Roman Empire and the German Empire. The Nazi regime ended after the Allies defeated Germany in May 1945, ending World War II in Europe.