Total War: Two Empires
This Time period is best known for the two empires, the Timeless Ymaryn and their bureaucracy, and the Umeans, most famed for their legendary legions that carved the biggest empire in the world. This is an analysis on the less standard Forces of both powers.
Umean auxiliaries
A vital but less well known part of the Roman armies, which was introduced relatively late in it's history formed by volunteer non-citizen soldiers. Starting as mostly levies supplying numbers and specialized roles, later growing more professional, they are a respectable force if not quite up to the general standards of the Legions. They however play an important role thanks to the wide variety of specialists that the Legion normally lacks.
Ymaryn Banners
The Ymaryn Banners in contrast are elite state sponsored mercenary units that combine the classic Ymaryn numbers advantage, the best equipment the Ymaryn can make, and exceptional training making them by far the greatest unit in the game within their specialties, in exchange for also being the costliest. An interesting note is the training allows certain types of banners to synergies with each other to make them far more scary together than when they were alone, thanks to their general training and discipline. They are also technically mercenaries which has given many a nasty surprise when one appeared out of nowhere to carry an enemy force, or proved to be a massive, but ludicrously expensive boon to a militarily struggling player whom happened to have tons of cash.
Comparison:
The situation here is somewhat reversed, as the Ymaryn Banners are their elite, effectively pushing them into a tier of their own, among the gamebreakers in power but with a price tag to match, while the Umean auxiliaries largely start amount the level of levies and tech into professionals. this means while Umean's forces are far
FAR cheaper, the Ymaryn run circles around them in quality, and thanks to Ymaryn being Ymaryn, they have a significant number advantage against other elites, further cementing them as units that could win whole battles single handedly.