I am a fan Europa Barbarorum for many years ago but i don't have the courage to ask why did the Sarmatian unit name have these strange words that people never encountered. Are they Celtic? Iberians? Latin? Greek?

For example: Rauxsa-alanna Uaezdaettae (Roxolani Noble Cavalry) and Aeldary Aembaltae (Sarmatian Bodyguard Cavalry), i try to find any source about these words but to no avail, hopefully someone from the EB team might explain to me is it some sort of extinct language or not.

Thanks.