It would be hilarious to see them try.

How do you 'pile up' on the biggest nuclear superpower on the planet, that also has escalation dominance and superiority in conventional weapons?

Meanwhile you have 30+ nations with LGBT armies, expended ammo supplies (they sent them all to the nazis), ineffective weaponry, and the head honcho is across the ocean and needs to transport troops & supplies to the theater, while zircons and nuclear torpedoes exist.

This is not WW1.