Can you elaborate on the officer vs enlisted tracks in the military? I'd like to know more.
First, this phenomenon is not necessarily limited to the USA.
In the USA there are two military career tracks: enlisted, and officer. The difference between the two pretty comes down to socioeconomic class.
To get into any officer position requires a four-year bachelor's degree, which must be completed before entering the military. No bachelor's degree, no commission. If you earn your degree AFTER you enlist, which many people do, you're still an enlisted rank unless you're selected for an enlisted-to-officer program. Admission to this program is not automatic and it may involve factors beyond your control.
Also, the bachelor's degree is everything. Not a journeyman's ticket (which takes just as long to get and which requires outstanding skills), not even a master's ticket in a skilled trade. It has to be a four-year university degree, or else it's worth nothing. A low-hanging-fruit liberal arts degree counts more than a master electrician's license. It's a class distinction, plain and simple. It becomes an "I got mine so forget you" issue because there's a gigantic double standard in which the people who punch that particular ticket before joining the military are set up for significant career opportunities that are unavailable to the people who (for whatever reason) do not punch the ticket. If you never punch the ticket, or if you punch the ticket late and not at the upper-middle-class appointed time in the career cycle, you're still pretty much labeled for life because of the way you entered the system.
Now here's the kicker. If you get your bachelor's degree AFTER you enlist, there's no automatic promotion to officer except through one of these programs. You can have a master's degree and still be a grunt. So it looks like this:
Person --> Bachelor's degree --> Military = Officer
Person --> Military --> Grunt --> Bachelor's degree -> Grunt with a degree
See what I mean? Education is only valued and rewarded if it's done at a time that's culturally associated with the upper and upper-middle class.