"Take cover, the Russians are coming!" Soldier runs from invading Russian forces.

http://filesmelt.com/downloader/cs_assault0035.jpg

Not bad.

Bullet holes don’t look very nice and the simple depth-of-field is a little excessive (as well as ugly).
Posing is okay but the guy nearest the camera is kinda floating.

Good camera angle.

i was actually expecting some WWI or WWII thing here

I almost forgot to mention SEXY, i really like the blurring of the helichoppers

30mm Cannons do not leave bullet holes.

You used the US AA from frontlines which is really modern, but with the way you used smoke it comes off as a Bradley linebacker.

Overall screenshot is nice, just needs some editing (Like contact hits from the hind’s cannon) and less bullet holes.