I was enlisted from 1976 to April 1986, and an officer for the rest of the time.
I held three commands, including one in Iraq.
I retired as a Colonel, selected for Brig Gen, but retired instead at 59-1/2. For those who know how to use the US Senate search tool “Thomas,” you can find my selection to Brig Gen on December 21(?) 2016
I was active duty until 1992, then Reserve or Guard for the balance.
Does that matter? If so, why?
He has a retirement thread where he listed his service. I'm sure you could find it with enough digging.