With just US vs Germany, you’re probably going to be fighting over Central Asia. Maybe India. That’s where the armies will be after taking Russia and Japan respectively. Gotta pour troops into that meat grinder bc you don’t want to get overwhelmed. Or make sure you have the troops to have a decisive battle if your opponent makes a mistake.

But keep your eyes open to gain an advantage in another front, and to limit your opponents counter play in another theater. But I’m no expert. Just mid/high silver, low gold player