Early-game
The WSC Player
The early-game versus mixed Axis is a bit of a combination of both earlier building orders. You have to start with two .30 cals to resist multiple Panzer Grenadiers supported by MG42s, and most likely a Motorcycle.
Your next unit depends a bit on what the Wehrmacht player is doing. Most Wehrmacht players will play something like
MG42 Bike MG42; in that case you get a Mortar first and a Sniper second. If the Wehrmacht player goes
MG Bike Sniper, you'll need your Sniper earlier lest your MGs and Mortar will die. In response, get a Sniper first and a Mortar second, since you'll always need a Mortar as first or second unit to kill his MG42s and bunker.
The Barracks Player
The role and the building order of the barracks player is almost exactly the same as in the double US vs double Wehrmacht match-up. Get three Rifles with BARs, a Jeep if you prefer, and support your mate.
After this you should build a Triage Center in the middle of both bases (if possible) and get a Medic Tent.