Since my previous campaigns had me being able to steamroll my enemies too easily, I decided to not to start any wars at all unless that faction is down to only 3 cities or less to let the factions expand and give me a good challenge.
And give me a challenge they do, the Romans have decided to attack me at full force while I was preoccupied with wars against the Germans and the Boii.
Unlike with the two barbarian factions, the Romans' heavy infantry (They are now in the Polybian Phase) prove to be a tough nut to crack and I lost three full stacks due to being unable to witstand a prolonged fight.
How do I fight against them when the only heavy infantry that can stand against them are the Nobles/Retainers and they come in short supply when compared to how the Romans can get as many Principes, Triarii and Pedities Extraodinarii as they want?