Red Germany

After World War I, Germany attempted to establish a democratic government. This government, known as the Weimar Republic, was weak and quickly dissolved into fighting Nazis and Communists. In the Weimar Republic elections of 1919, the Communist parties made a poor showing and thus were knocked out of the race for control of the country. What if, instead of losing badly, the various Communist parties managed to win a plurality and thus take over the country?

Fighting in the Streets 1919-1924
Formation of the one-party Kommunistisch Republik von Deutschland (KRD), or Communist Republic of Germany outraged many nationalist parties, which consequently staged a civil war and recieved financing from several big businesses. In response, the Communists declared martial law and won the support of many people by promising jobs and healthcare for free. The business interests were powerful, though, and despite changing national opinion the conservative parties managed to hold their own until 1922. At that point, help came in the form of 25,000 Soviet troops, fresh from the civil war going on there, which quickly rooted out and destroyed the remaining conservatives. In July 1924, the last nationalist party headquarters was destroyed, and Germany was at relative peace.