Over the years, I have encountered a few people who, early in the conversation, mentioned that they had been in the Army or Marines. I always ask what their MOS was. A blank stare in response was the “tell” that they were frauds. I then change the subject; it’s not worth the drama to confront them.
I didn’t realize until recently that they had changed the number assignments. This old Mess Sgt. would now be some sort of electronic specialist.