i tried giving everyone gunfactories(or what ever they're called) it didn't work,
i tried make a castle being the only requirment for my new troops, it didn't work
so i thought it was because of "Unit choices (AI)", i changed them around for days, it didn't work

and another problem that keeps on happening, about 10 years into the late period, germany becomes brain dead. The game goes through the "think" mode, and freezes on Germany. THis usually happens around the time of the first war germany goes to in Late.