I agree with your sentiments about the opponent, he is indeed one of the best players in the game... but at the time, the opponent was in a transition phase with his strategies, and wanted to prove a point about the efficacies of "peasant power", being of direct slavic heritage himself.
That point was blunted severely, along with his ego.
Now returned to the domain of sound tactics, the opponent of Dave from above would most likely emphasis the importance of combined arms teams, and that the US infantry company is an outstanding kit purchase for many reasons, but especially due to the effectiveness and utility of the 60mm mortars.
I read above that at times, they are used to take out guns, but only in desperate measures. Truly, the most effective strategy for the 60mm is to be used in concert with infantry assaults to pin and disrupt the enemy in "boxed" positions.
Against another opponent, I realized the true value of the 60mm mortar when I threw 3 Companies of Folgore SMG paratroopers into the woods against a company of US riflemen well positioned and supported by 3 60mm mortars (within 50m of the firefight behind the Yank lines).
The accuracy and impact of those mortars silenced the meatballers with deadly efficiency, causing for disruptions, panicks and breaks that decimated my advance.
It took a full 8 turns before I could throw my Italian SMG's against this defence again, and eventually it capitulated. From that point on, I never bought infantry without a good compliment of mortars, denying myself full battalion bonuses in some cases, just to get my hands on more onboard HE.
The point is thus boiled down to this: infantry will hold you ground, but arty will allow them to take it.
Cheers!
Leto