well now they put the may 6th stuff up finally but now it's too late ):< but here's a thing inspired by yesterday's days anyway
Q118. Are any of your OCs involved in the military in any way, or any sort of in-universe equivalent of one?
Lausac was previously part of his planet's military, as all able-bodied Ardesians automatically were. He took pride in it for a while until the rampant classism present started to wear on him even moreso than it did before becoming part of the military, but it wasn't like there was anything he could do to change it. Fortunately, it was around that time that Hadris swooped in and fucked everything up for the better, prompting Lausac to pledge his undying allegiance to him.
On that note, being an evil overlord and all means that Hadris naturally has an army of his own! Service is strictly voluntary and there are all sorts of different positions available to take advantage of the wide variety of species and powers present. His life's pretty much a big game that he's the final boss of, after all, so of course you're going to have your DPS and your tanks and your healers, so on and so forth.
Ochotnik, like other Monster Mages, was employed by a Monster King before she wound up on Celestella, but she was really more of an assassin than something more honorable or even just organized. Not that Monsters are known for their honor... I mean, their war is pretty much just a bunch of rich assholes giving loads of money to other assholes to kill their opposing rich assholes, so their militaries aren't quite militaries... but still worth noting!
That's basically it! I don't have a lot of militaries in my stories just because the worlds in question tend to be really peaceful or really fantasy and tend not to have organized things like that even when there is some sort of underlying conflict or danger.