POV: Your military oc sees her heading towards enemy terriory

Gmu: WHERE ARE YOU GOING NOW

Clo: "I dunno!"

Gmu: don't go that way!

AVT Agent: "Don't go there! Those weirdos might eat you alive!"

Can I use a character who is a soldier for a king? Is that close enough to a military character?

Sure!

Avice: “child, stop where you are! You are nearing enemy territory, you could be killed”

Clo: "Uh… what?"

Avice: “aren’t you aware? Before you lies great danger, monsters who were once passive have fell to a curse and now have a lust for killing.”

Clo: "Oh… sounds fun!"

Avice: “I do not wish for you to die, stay here where it is safe”