I've played through the Polish and French Campaigns and most of the Soviet Campaign without problems. However I'm completely stuck on the mission called "Liberation". I'm supposed to capture a fortified village, which is not very heavily defended. However a convoy of about 5 Tiger IIs arrive almost at the very start of the mission and I have no chance of taking them out. Even the 122mm gun won't kill them with a side or rear shot. The 85mm won't even scratch their paint.
Can someone tell me how they did it?