Roman tactics?

[Kevin]

Okay, well I'm currently arround 210 BC on my Romani campaign and I've destroyed both Gallic factions and now I've been betrayed by the Sweboz. After several battles with them, I realize that a lot of their units are stronger than the Gauls. Before, I was use to my units being a lot better than the Gauls (besides their Gaesatae) but now I realize I need to change how I face the Gauls, and later the Greeks. So what I'm wondering is what are some tactics (such as the Hammer and Anvil for Makedonia) that you use not only against the Sweboz, but throughout the entire Romani campaign?

EDIT: I've reached the Polybian reforms if it matters.