PE can go for 2 buildings, one to get squad size upgrade and scout cars, the other for MG and mortar halftracks.
You can usually use the MG HTs to destroy someone's infantry force totally if you get them out early enough. The problem is that even basic rifle fire hurts them very badly, much more than normal halftracks apparently, and they never seem to get better. And you dont get OPs.
But if you go for squad size upgrade and scout cars for resources, you get screwed if he plays defensive, especially if theres a brit player and hes spamming trenches, vickers, mortar emplacements, so on so forth. Sometimes you just cant flank a point and charging forward to try and incendiary nade a trench with all the supporting firepower is sucide.