As an aerospace engineering officer, I would have airframe technicians, aero-engine technicians, instrument and electrical technicians, and safety systems technicians working for me. There was a time when those trades did not cross over to a level of civilian equivalence as a civilian aircraft maintenance engineer, or an AME. Those are the individuals who work on everything from small general aircraft right up to what Air Canada flies.
I don't know the exact crossover, but over the better part of the 20 years that I have been out of the military, credibility has been established for the training that has been received in the military, and it either becomes equivalent to or condenses or shortens the amount of additional training required for someone to acquire their civilian certifications.