Quote Originally Posted by Mikeus Caesar
...i have heard something about there being a roman civil war some point during the game. if this is true, could someone tell me when it starts? Because i need to know when to start hoarding my units up in my italian cities!
Another thing...

You will get messages in game that state that your popularity with the plebs in Rome is high enough to justify marching on Rome and overthrowing the Senate, if you get that message, you can declare war unilaterally and get on with it..

When playing a Julii campaign I had troops in Arretium waiting when I got that message, took two turns to reinforce, then attacked! So you can start the civil war if you wish (and I wished!).

Before that point when you click on SPQR/Brutii/Scipii units, it says you are allied with them and can't attack, after that message its the normal 'are you sure you want to attack?' message like you get when attacking a foreign neutral or ally.