Nothing concrete in-game, but my own impression is that they’re not really large enough to need that. I’m sure each recruit ends up in a particular warmaster’s command and tends to stay there, but keep in mind that the reason modern militaries have so many divisions and sub-divisions is that they’re expected to defend against each and every plausible threat that might be directed against their country, as well as being forced to divide themselves to cover the breadth of their country. The Vigil doesn’t have those concerns. At this point in their existence they’re looking towards one foe, and one foe only- the minions of the dragons. They don’t need separate groups trained to fight centaurs, or to utilize urban warfare tactics, or what have you- they focus on where dragon minions are today, not where they might be tomorrow or what other things might try to attack them. They’ll need to, on individual or perhaps squad levels, split up their training so they can serve different roles on the battlefield, but I suspect that’s about it.
R.I.P., Old Man of Auld Red Wharf. Gone but never forgotten.
