I have to disagree with you in some aspects.
I like COH2's cover art a lot. Sure, I get that in many respects is not exactly historically accurate but I believe it portrays the struggle of the Soviet people [and the Soviet state, NKVD and all] to repel an invasion that for a while seemed certain to win. In that commisar's face I see determination, hard realism and above all resolution to win no matter the losses. Also, the background showing soldiers running disorderly with T34s by their side shows the "all or nothing" psyche that has characterised the Soviet people in most of the normie literature we have today.
And for that I like it. Sure the coat's style might be inaccurate (never bothered to research this) but I feel that the struggle is well presented in this way. Red Alert or not, the cover art is badass.
But don't take this the wrong way. I can see where your point is.
Just read the real story of photography "Kombat" is a junior political commissar who raised the pinned soldiers to attack and died immediately. This is a photograph taken just moments before his death.
Or take this photo for example, it perfectly shows the mood of the game, and there are many such photos.