Wir Sind Spartakus
A timeline by Zimmerwald1915. The Point of Divergence is that, instead of Karl Liebknecht and Wilhelm Pieck, Rosa Luxemburg and Leo Jogiches attend a certain meeting on January 5, 1919. The cautious course they urge, against open revolution at that time, leads to a stronger Communist Party and eventually a successful German Revolution. It is the author's first timeline. It can be read on the forum here.