Germany ACTIVELY supported/encouraged the Bolsheviks in Russia. And so the Russian Revolution succeeded, and then Germany was able to transfer 44 battalions to the Western Front - which meant they had more troops than the Allies, and had another chance to win WWI...!
(I think what happened is that the USA entered WWI around then...swung the advantage back to the Allies.)
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Here is the discouraging part (at least if you are looking at capitalism searching a way forward): NOBODY treated their soldiers/workers well just because it was the right thing to do..
1. England's David Lloyd George said, "If you are certain the workers are going to strike, then give concessions." And that is how the UK kept the British war production going.
2. France had workers complaining they were struggling/starving while the upper class got wealthy; plus the French soldiers put on something between a mutiny and a strike, because of really bad generalship and huge casualties. So France got a new general, shot a token 49 strikers/mutineers, and paraded the rest of the soldiers past the dead bodies. Psychology + better treatment, kept France fighting.
3. Italy, terrible brutal general. But they kept the general WAY too long...and the soldiers simply surrendered to Germany en masse! Swarmed over to Irwin Rommel of WWII fame (very young then), carried him on their shoulders shouting "Viva Germania!" 300,000 surrendered, another 300,000 just left for home - Italy lost half its fighting force before they finally fired that rotten general.
NOBODY did the right thing for the hoi polloi without desertion/strikes/revolt by the masses - just like nobody is trying to do the right thing by the working/middle classes here in the USA now...I'm worried...history does not bode well for us (USA) to get through this w/o mass uprising....can you find hope?