I think you're right Andy. As in WW2, spread out and hiding in trees. Although I'm not sure if trees actually provide "air cover" for armor.
I just received the CD full version of WinSPMBT today and after loading it in and installing the latest patches, I must say that I find the realism of aircraft ops as well as fire against ground troops much more realistic than the WW2 version. But I sure hate those Ruskie Frogfoot ground attack planes. The stuff they drop REALLY hurts