The thing about winning as allies is first you got to have rush fuel early game. That way if you get tanks fast enough (which I found they get them first before axis) then you should try to inflict as much damage ( and territory capture) as you can without losing your tanks since you got a moment of advantage. However, that's a bit difficult because of kubelwagens so you always need a soviet players just because Americans can't counter that one unit.
Of course if you destroy the trucks it will set back an axis player by a lot but destroying one isn't that easy task you got to rely on their unwise placements or neglect for that to succeed. The best way to win is actually too hope that the Axis players don't choose the right doctrine and capitalize on that. It's really a doctrine war, you go B4 Axis go Stuka dive bomb, you go ISU axis go Jadg, because if you don't get either of those as axis you're fucked. Heavy tanks or Heavy artillery rule the game it's all about the doctrines.
