History of Germany during World War I
In November 1918, with internal revolution, a stalemated war, Bulgaria and the Ottoman Empire suing for peace, Austria-Hungary falling apart from multiple ethnic tensions, and pressure from the German high command, the Kaiser and all German ruling princes abdicated. On 9 November 1918, the Social Democrat Philipp Scheidemann proclaimed a Republic, in cooperation with the business and middle classes, not the revolting workers. The new government led by the German Social Democrats called for and received an armistice on 11 November 1918; in practice it was a surrender, and the Allies kept up the food blockade to guarantee an upper hand. The war was over; the history books closed on the German Empire. It was succeeded by the democratic, yet flawed, Weimar Republic.
Kapp Putsch
After Germany had lost World War I (1914–1918), the German Revolution of 1918–1919 ended the monarchy and the German Empire was abolished and a democratic system, the Weimar Republic, was established in 1919 by the Weimar National Assembly. Right-wing nationalist and militarist circles opposed the new republic and promoted the stab-in-the-back myth, claiming that the war had only been lost because the brave efforts of the undefeated German military had been undermined by civilians at home.