Yeah, I've gotten 3 near piat misses on one of my tanks when I closed in on one of the buildings thinking the residents were suppressed enough. You have to make sure enemy has their heads down.
What I did is I split my squads in assault end support teams and,advanced with assaulters until,they,would come under fire. Then I would suppress the enemy with support units who are covering them from behind (make sure they have LOF). I also used area fire reckon to see if I'll get any enemy,response without risking lives of my,assult troops.
It nevertheless gets very tricky in the thick forest advances whdre I acrued the most casulties due to practically invisible enemy until you are right "on top of them".
Good luck.
Edit: Never mind typos, typing from the phone.