And does Poland really need an airforce? Disband that and feed the replacements into your ground troops.
I never do things like that. Gamey.
I actually never took Poland seriously, until I realized my opponent had stripped all the armor out to the west. By then only Lodz was still in my hands.
I'm not really a very good player. If I can't do quasi-historical things without delving into the underbelly of a game system, I just won't do it.