help for a n00b

[masterkrovel]

Hi there!
I really enjoy this game, both the campaigns and playing online with friends.
However, one of my regular opponents tends to use a lot of anti-tank guns, and I have some problems defeating them. Obviously, tanks are a bad idea, but I find that infantry are very vulnerable to them as well, even in flanking manouvers, as the guns shoot through cover, and turn too quickly.
My best tactic so far is mortars combined with officers, however this is an expensive combination. Does anyone have any good tactics to use against anti-tank guns?

Thanks!
mk

On a side note, I think the AT's in Men of War are slightly overpowered. For example, the real-world PAK-40 weighed 1.5 tonnes, and was next to impossible to move without a motorized vehicle. Yet, in Men of War they can easily be pushed along the battlefield, as well as be turned quickly.