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.
German Revolution of 1918–19
It was only on 5 October that the German public was informed of the dismal situation that it faced. In the general state of shock about the defeat, which now had become obvious, the constitutional changes, formally decided by the Reichstag on 28 October, went almost unnoticed. From then on, the Imperial Chancellor and his ministers depended on the confidence of the parliamentary majority. After the Supreme Command had passed from the emperor to the Imperial Government, the German Empire changed from a constitutional to a parliamentary monarchy. As far as the Social Democrats were concerned, the so-called October Constitution met all the important constitutional objectives of the party. Ebert already regarded 5 October as the birthday of German democracy since the emperor voluntarily ceded power and so he considered a revolution unnecessary.