[LDiCesare]

Hi, welcome.
Be careful about province defense. Do NOT mix archers, or even javelin throwers, and melee troops. Since all your guys are unarmored, they'd suffer the Machaka syndrome: Archers will kill their friends and the whole army will rout.

Also, with no air access to fend off missiles, you'd better have good nature/earth buffs to help your troops in melee. They'd better be cheap too or they'll die in droves.