I'm from Asia, and I'm chinese, but I fond to the world historical military warfare. One of my most favorite one is the Roman Empire, and I have research their warfare and tactic by reading the internet.
But I think, the information that I have obtained hasn't sastified my thirst, yet. So I need to ask the people here, how the Roman used their troop in the era of Republic.
What I mean here is what was their military docrine, strategy, tradition, and tactic, and how they overpower their neighbor and conquer the world in the ancient time.