How do I find out if my friend is lying about his military career and achievements?

FOIA request for his records

Cpl Jay Wells If he received a less than honorable discharge, He would not be accepted back into the Marine Corps, unless he somehow had his discharge upgraded. Why not just drop him as a friend if you are having doubts?

If he's on social media, are there any pictures of him i uniform, at Marine Corps Balls with other marines, any pictures or statuses of him getting promoted or anything like that? If not, he probably is lying. Just about everybody shares this stuff. If you see pics of him at a Ball, that would give you an idea of how much and where he's served based on his ribbons/medals. Just an idea.