Officers are different. Typically somewhat educated. College grad. But my comment speaks mostly about the age range in general so it's not exclusive to the military. 18-25 year olds are mostly mouth breathers, self assured, know it all, combative, emotional, little semi-adults.
I don't mind the hardcore Rambo types as they tend to have the best "army knowledge' when it comes to sucking it up and getting stuff done. Combat arms types you just wind up and let go and stuff magically happens. Laziness and stupidity is rampant in the non combat side....and this comes from a non combat guy but have been in combat units. 12Bs are awesome. :) Basically a bunch of alphas running around acting like crazed lunatics but will get the work done because theres sooooo much hoooooah.
Alan