I finally get it
you suppose to just mass the ATGM and just watch anything that doesnt have smoke explode
I tried using the 65 pts dragoon but they they are kinda useless
dragoon without ATGM is also kinda pointless, since MGS is better at fighting other IFV
In which I think the fully upgrade m10 might be even better at that job

i might bring a ferrying truck that can also carry troops instead so I can move both supply and reinforcement at the same time
that way I can skip having to bring cheap IFV all together