A very interesting timeline, for all it only covers a couple of years. I'd never considered a successful revolution in Germany a real possibility before.
I would have liked to see more examinations of the political and economic evolution of Germany through the revolutionary period.
I must say, I am quite dubious that the Rhenish republic would be at all viable - much like the Russian White Republics all lost viability when it was clear that the Bolsheviks were triumphant in the Russian core, I don't see how the Rhenish republic can maintain a sense of separateness among their citizens. It simply isn't Germany, and however red Germany might be, once the reds win, they will still be seen as the legitimate German government. And I don't see how they can avoid being tainted by the association with the French and the Belgians - both countries did a good job of alienating the German people with the unpleasantness of their OTL occupations of German soil.
I'm not sure Bavaria would submit quietly to the new order though. Bavaria at this time had a strong sense of separate identity, and the Communists deciding to have a centralized system is going to annoy most everyone in the Kingdom of Bavaria, including the Bavarian Communists. The other German states had lesser, but still significant regional identities. They were Germans AND Hanoverians/Prussians/Saxons/what have you. I don't know if this would be a fighting issue in other states, but it would certainly be a cause of argument and discontent.
Assuming the Bavarian Reds and German Reds avoid a fight, I'd really love to see what Silvio Gesell and Gustave Landour are up to in the new Communist Germany...
Curious if Hungary will be able to avoid self-destructing in this more Communist Europe... Seems to me that it is still very likely, alas. Hungary avoiding the white terror would be a much happier place.
Prussia is going to be really interesting... Unlike the Rhennish lands, I can buy Prussia forging an independant identity for itself (as I understand it, the province was extremely loyal to the Hohenzollerns - the family had ruled it pretty well for a long time). I doubt that there will be many refugees from the German Revolution (it is a very, very different beast from the Russian Revolution - less violent and Germany is a more comfortable place to live - much like the Jews of OTL, many people will figure that it is better to stay with their property, family and friends and wait for the political storm to pass), but I expect there will be an influx of White Armies, capitalist refugees, highly political types (particularly Hohenzollern loyalists). Those, as well as the relatively good infrastructure and industry for the region will give the Prussians a jump start to developing the province into a regional power. My bet is the Prussian propaganda would be very anti-communist, and their practical policies being very anti-polish.
A strong leader among the small Baltic countries would also dramatically shift the diplomatic dynamic. That could have all sorts of interesting effects...
Given the strength of Polish nationalism and the quality of its organization, I doubt that Poland would be completely extinguished at this point, but I do think that the Russians would have a border much closer to the Curzon line, and the Germans a border much closer to the 1914 borders. While I think some sort of "Miracle of the Vistula" would happen, just how big the miracle is awfully sensitive to events I think. The greater fear of German or Hungarian intervention and the slightly better Russian position is going to have significant impact on the Polish and Russian performance in those critical battles.
Thanks again for the interesting timeline Zimmerwald, and I hope you enjoy my comment, even if it is 3.5 years late.
fasquardon