Factions
Octavian
A Political Monster capable of bending Roman politics to his will, Octavian – whom we know as Augustus – upholds strict Roman ethics and standards, and his methods and tactics are completely drawn from the Roman Way. His Legions are almost completely drawn from Italy and their peers are none. Magical Girls who serve him tend to focus on raw, land based power to dominate the battlefield. Their skills are second to none and their numbers are Legion.
Antonius and Cleopatra
An Alliance between Eastern Rome under Antony and Cleopatra, the (in)famous Queen of Egypt, their alliance creates a fusion of eastern and western concepts. Although many conservatives in Rome consider Antony unroman-like, he fights in the old Roman Style and was an experienced lieutenant who served under Caesar – underestimating him will bring nothing but peril. The backbone of his Roman style army and navy, however, is supported by Cleopatra and contains many exotic Egyptian and eastern forces, creating many new and varied possibilities at the cost of the pure, raw skills as the ones Octavian's legions have. Magical girls in this alliance can be either Roman or Egyptian, and through their multiculturalism Roman magical girls in this alliance can also take on the traits of either a Parthian or Egyptian Magical girl in addition to their own Roman traits at the cost of a reduction of power on both sides.
Lepidus
The little third wheel whose potential to take command of the fate of Rome is diminishing but nevertheless still plays a critical part in the battle, Lepidus leads an indecisive NPC faction with very few magical girls. Although his potential to win the war is non-existent, his ownership of Carthagian grain and Spanish silver, along with the legions he has under his command, makes ignoring him a foolhardy strategic move for anyone.
Italia
The Province of Italy. Although theoretically jointly controlled by the Triumvirate members Octavian, Antony and Lepidus, practically Octavian has the most influence and power here. If Rome is the key to the world then Italy is the door mat you put it under. Needless to say, this province is the most crucial in the war.
Pompey
The last hope for the restoration of Rome as a Republic(And son of Caesars greatest enemy), Pompey begins with a strategic position weaker than even the diminishing Lepidus but his potential is far greater. Furthermore, his navy is capable of challenging those of even Antony or Octavian alone. Although his initial resources and legions are low save for his navy, his magical girls are also vaunted warriors of the seas and the skies. The maidens who worship the gods under him focus on aerial and naval combat.
Parthia
A Land just recently defeated by Antony and whose holdings east of Iraq were carved up between him and the Egyptians, Parthia is a recovering but vengeful land. Parthia is not directly involved in the beginning, but Parthians can join a warband and fight with a focus on hit and run tactics utilizing missile cavalry. Parthian Magical girls focus on a balance of land speed and ranged capabilities.
Warbands
Although possible for Romans to join or form them, Warbands are the primary way in which the barbarians such as the Celts and Germans can become involved. Warbands are Mercenary Auxiliaries, and although they do not hold a faction of their own they can build up money, experience, troops and reputation. Once their strength grows strong enough, they can either return to their home tribe and build it up as a faction of their own capable of challenging the warring groups of Rome or permanently pledge their allegiance to an established faction, gaining all the benefits and privileges that come with doing such.