this is, of course, unless you're going up against a nation that has power armor which it's recommended you have hard attack / piercing to get through all that armor. In general, the OWB focuses on infantry templates more than anything else so you want your divisions to have a lot of soft attack. you can push up to 20w if you have the manpower, but in my games 10w divisions get me by just fine. In general you want to stick with 10w divisions because of manpower shortages and they generally scale well.