Veterancy Behaviour with Ranks instead of Levels

[BiweeklyAaro]

So I know how to make units level up by giving them a veterancy behaviour. What I was wondering, was if it's possible to make one of these behaviours where the ranks are named differentnly, like "Novice, Adept, Expert, Master, etc." instead of the standard "Level 1, Level 2, Level 3, etc."

I didn't see anywhere obvious where to make this change, but the default veterancy behaviour seems to have different rank names listed somewhere, so I'm hoping this is possible.