FAQ said:Will there be set Cultural bonuses to men at arms like in CK2 with retinues, or are we able to customize them if they appear at all?
- Not as such, but as mentioned in the DD, there are plenty of different Men-at-Arms that are unique to different cultures. Steppe cultures will for example, have access to Horse Archers, while Greeks have access to superior Heavy Cavalry in the form of Cataphracts. Men at arms are not constantly raised, unlike in CK2. They're also very different from levies, while in CK2 they were pretty similar. They're costly to change, but not prohibitively so.
Here is also the warfare DD: https://forum.paradoxplaza.com/forum/index.php?threads/ck3-dev-diary-3-war.1279641/