Hmm. So even before the time period of the 'Rome' series, in the very early republic, we had the front lines being the youngest men, the hastati, then the principes, and finally the back rows formed by the veteran triarii. Of course that old phrase "going to the triarii" meant you were in bad straights, since everything else in your army would have been annihilated. So when the hastati were nearly broken or decimated, the principes would move in for the kill. Right? Or did the principes often engage in the melee in consecutive turns with the hastati? Is there any clear evidence from textual sources (i.e. Polybius, Livy, and others) that this is how it was done? I've never been quite clear on this issue. Would love to know!
