While you certainly cannot predict future events based on what happened in OTL, I would say that it is more likely than not that the US will get involved.Yes The Brits would be backing a Communist France that lost hard and just got out of a cival war. The Americans have no dog in this fight they were uninvolved in the great. Why would they want to get into European Affairs?
Honesty a big problem I see in People just Assume that events will play out like OTL. The whole Geopoltical landscape has been altered to think basicly the same war will be fought with the fighters wearing new outfits is absurd.
In the early 20th Century, European Affairs were World Affairs. To remain relevant as a Great Power, the US must get involved. Also, the US just got confirmation that Germany was meddling in its own backyard. Why would it not want to repay the favour?
We have also yet to see the German response to the sinking of the SMS Wohlstadt and Frank Kellogg 's subsequent press release. That response could be critical toward ensuring a thawing or cooling of relations between the US and Germany.
While Britain would think twice before backing a Communist France, if Russia too becomes Red fearing a Red Europe after an Allied victory, if Russia avoids becoming a Communist country, why not? France is close to the UK, and it cannot project power across the entire continent like the OTL USSR could, which mind you they still allied with in OTL.
It only implies that the USMC and the German Sturmtruppen Korps do not come to blows with each other.A past update also mentions that as of the 21st Century, no one knows who would win an actual confrontation between the US Marine Corps and the German Army's Stormtrooper Corps. This implies that the USA and Germany never actually do come to blows, even if it doesn't rule out future wars involving Germany. Just not between the USA and Germany.
Russia and France would certainly not instigate a War against Germany without the British and the Americans on their side, so the point is moot. If there is to be a War, it'll be a big one.Sure, if there's a next big war it must be so. Because it wouldn't be a big war if it's just round 2 of Germany-AH-OE-Italy against Russia+France. It'd be a war, sure, but France would be crushed - and everyone would see that coming. Britain might support them on the down-low, and even the US might extend friendly credit, but it still wouldn't be a great war.