Importantly, you will actually be able to command both at the same time, giving you a very large toy box to play with. You'll be able to play as the German, UK and US forces, though on the campaign you'll just be playing the Allies. What Company of Heroes 3 factions will be playable? What I could have done in four hours took me 11. I played through a small slice where I had to take Monte Cassino, giving me a road to Rome, but along with my main objective were countless other battles, side missions and territory to conquer.
We've only seen the Italy, and it seems massive.