I suppose I meant for Japan too. I think a mix is best.
As Japan, If I have two ICs: I buy 3 Mech at the further away one and Inf and Art at the closer one. I always buy DD and TT for Japan too. You always need to threaten the West Coast or drop off Asia.
I am not the best as the Axis, but I have played a lot of people here.
Russia is the key, but grabbing the Oil money works better, once Russia retreats all to Moscow. Need to starve Russia of income.
You are lucky to play with a group. Friends are everything.
Again, thank you for your time.