First of all, thanks a lot.
I'm really amazed by all the quick and precious reply. First time i used this forum, not the last !!!
Well, by the far, the best advice is to avoid these monster. Yes, they're the entire armor force of my opponent !!! And my other wing have already bypass their frontage. In fact, a huge hill occupie the space between !!!
I will try to use my pioneer if he want to push farther.
Aftermath soon
Sorry for my poor (frenchy touch) language.