The unit Q is the avg of the weapons and ammo. So if you want 200Q unit and you have 200 Q weapons, but 100Q ammo, then the unit Q is 150. The higher Q allows you to do more with less. However, it does take time and money to buy the upgrades, but thats still cheaper then buying the weapons and ammo at higher Q levels. Its like many other things in this game, there is not just ONE way to play.
I see. But it must be impossible to upgrade for example artillery shells effectively, when you use around 7500 artillery shells each month. I mean, you cant upgrade something that is there and suddenly gone again.
So, the best thing in relation to artillery and tank ammunition (that you use lots of each month), is to have corps. to feed your military with high quality artillery and tank ammunition...
Furthermore, you then feed your soldiers with high quality bananas to make them care more for the ammunition. The soybeans are not part of that conclusion