Veterans preference got you the job, and thats it that I know of. If you become a regular, and are a retired veteran, you can use any combat time you had added to your regular carrier credit time for leave purposes only. RCA time will not count. Which if you had a lot of combat time is worth the paperwork. But you have to be retired military to get it, not just being a vet. If there is something else worth while, I don't remember it.