Just to clarify about my Greek-speaking nomads.

I've heard Greek spoken several times by a Parthian army that was a mixture of Parthian and Daha units. But I think the culprits may be the Daha, because lately I've disbanded my Parthians because they were too expensive.
Last night I heard someone yelling something that sounded like "Archers get in formation" except that it got yelled in Greek. The only Parthians that I had in that battle were the General's bodyguard, so it must have been a Daha who yelled it. I also hear "move quickly, guys!" in Greek a lot.

These are not rebels that are speaking Greek. These are the Daha archers and javelin-chuckers that are part of the Parthian initial setup. I haven't paid close enough attention to see if I can get the Parthian cavalry to do Greek commands as well.

Are there really Farsi voice-bits in this thing? During the set-up phase of a battle using the initial Parthian and Daha army one of the things that I noticed is that most of the units grunt back in English -- once the battle starts they seem to be speaking Greek. I'd pay closer attention to this if I knew what the linguistic capabilities of these units actually were.