I'm not flaming you, you can do whatever you like, but what's with the Soviets? There hasn't been any Soviets for 20 years now...
And why on Earth would they go invading the US? Or China? Or any other nation? They've got enough to worry about keeping themselves running, rather than going invading a country across an ocean...
This makes no sense. And if a war was to occur, nukes would fly pretty soon and there would be no need for a ground war, for there'd be no ground left on either side.
There are plenty other good scenarios that could include a ground war, modern weapons and the US & the future if you wanna make them:
- A war for resources in the future, as indicated by current US conquests of countries that have oil, that would make sense. Like trying to conquer lands with oil, iron, coal, even grain or fresh water...
- A civil war in the US along ethnic and state divides perhaps, with the federal government trying to keep a lid on things.
- A limited local conflict, perhaps with Mexico over immigration.
- More Middle East/terrorist stuff
My 5 cents anyway. If yer going for realism, go for something credible rather than a totally far fetched idea. Even a nut like Hitler didn't have a plan to invade the US...