I was playing as the Pahlava, facing an AI Seleucid general commanding two units of Pantodopoi. The strange thing was that when this AI general gave group commands, the two units responded with the female "YAH!" sound from vanilla and BI. What the?
I'm afraid I don't have a save file - instinctively overwrote it after the battle -
but seeing as its just a sound file I assume it can be investigated?