Several of the military-type careers involve ranks - Imperial Psycher and Guards for example - Lieutenant, Captain, etc. The rules say as soon as you're XP hits the minimum, you go up to that level.
Within the game logic, how does that work. Does the Inquisition just tell the organization you're seconded from to promote you. To the best of my knowledge, in "real" life, you have to get some kind of training as you go up in certain ranks.