But if I wanted a bonus for air, the only option is western. I prefer to focus on two types of troops and heavily research them. Marines are nice but I'm open to change. I used to do tanks but I keep getting burned by ships and planes so I am looking for alternatives.
In terms of air troops, Western is the only doctrine that gives more damage or health to troops as well as early research. Surely western is best? The attack helicopter for example, has +20% armored damage as well as early research
I've always used western and then heavily researched marines and main battle tanks which is pretty good for attacking but it leaves undefended against planes and ships when I try to move via sea or am fighting. This also leaves me heavily unprotected when I'm being attacked. What's the best strategy for picking a doctrine and what troops to mobilize?