Elephants

[mightilyoats]

I was able to buy elephant mercs once somewhere in the middle east... But for the life of me I can't remember where. I never found them again.

Then there might also be chance the senate gives you a unit as a reward.

Other than that (or a mod) I don't know of a way.

[Omanes Alexandrapolites]

Hi,
Fortunately you can get elephant mercenaries as the Romans (and all other factions) in elephant regions such as the wealthy land around Carthage. These "elephant" regions are marked with a small elephant on them showing one that almighty elephants can be recruited as mercenaries in that province and in the city should you be a faction that can train elephant units from a city. Enjoy playing with your elephants and cheers!

[ByzantineKnight]

You can hire them here:

Assyria
Syria
Babylonia
Coele Syria
Phoenicia
Judaea
Mauretania
Numidia
Gaetulia
Sahara

Note: these are the Provence Names, not City Names...