I am somewhat confused in my first read-through of the rules. I have purchased Roman Early Imperials, but I am having trouble classifying them; my knowledge of the Ancient Period for wargaming is non-existent, this is my first foray into the period, and that may have a lot to do with it.
24 Legionary Romans would be Heavy Infantry, in three ranks? Yet in the rules I see examples of Romans five deep! Are formations containing more than 24 models simply wider. i.e. same depth but of greater frontage?
Would Auxilia, then, be "2 rank infantry"?

