TOFO's scary talk is just scary talk.
Many people who leave the services (whatever trade or rank) have a really good set of transferable skills topped by a good work ethic and the stable platform of an ability to turn up to work even when their toes have an annoying itch.
Okay, I left with some CAA A&C Licences, but I never really needed them, moving into management and consultancy quite soon after leaving. I left as a Sgt Rigga. I have no management qualifications and no specialist qualifications yet here I am running my own dept and plans affecting up to 200 engineers and a lot of aircraft.
Remember that its not what you did in the Services that counts towards a lot of jobs - its what you bring to the job that counts.