New long campaign player needs tips.

[Nitro Cruiser]

Something else to consider, increase the map size a little to give your support units a little breathing room, but not too much or you'll spend a number of turns just getting to the front.

Speed is a great asset of the German forces, us it to your advantage. I like to buy a couple of motorcycle units. There is one that has two MMG's with it. It is great for zooming ahead, dropping off the MMG's into position and grabbing victory hexes. The MMG's can even put a hurting on British Dingo's and other armored cars. At the very least they tie down enemy forces, while your slower armor can catch up.