@Temudhun So I read that little paper about the Swahili warfare and what I could sum up for the game was this:
Swahilis
- Thin and low walls, but many and made of coral limestone (some building bonus maybe?)
- They used houses roofs as firing platforms (houses can shoot arrows? Khmer 2.0?)
- No professional armies; they made alliances or used Bantu/foreign mercenaries
- Murder Holes (with boiling oil) and Arrowslits confirmed
- They had lookouts to warn them of enemies coming (wider LOS?)
- They used flame-shaped pikes, bows with long arrows, swords, shields with umbo(?), catapults on top of the walls and Dhows with cannons
(Trivia: they also had caravanserai; maybe some market bonus)
I didn’t see any mention of horses there, and based on this answer, I’m going to assume the Swahilis didn’t use them
in war either. Of course, I will keep looking for more, principally about the ships.