Legionary name for Greek faction?

I´m following the new GSC AAR which runs on twc and org. forums and was enjoying it so far :2thumbsup:

Now, i had an idea to use the "Legionary Name" attribute for the sub factions, the Spartans and Athenians, to be able to distinguish the units trained in each city ( or even for any Greek poleis ). Is this possible to somehow use this feature, or does it only apply to the Roman faction and units?