Don't think of military medicine as only treatment of active duty. The entire family (and most are married these days) gets treated, as well as retired military and their spouses at many if not most military treatment facilities. With the all voluntary military, sick call abuse is a trivial to almost non-existent problem anymore. Also, the earlier reference you made to over treatment resulting from patient demand, i.e., antibiotics for a cold, is (I believe) just a specific manifestation of what I've referred to in earlier postings as "defensive medicine" as a consequence of our litigious society. I suspect civilian docs would be more resistant to patient pressure if they weren't worried that the very rare "cold" might really be an atypical presentation of a more serious bacterial infection and that a disgruntled patient in that circumstance might be likely to sue for malpractice. Of course, we both know that if instead, an antibiotic is prescribed for a cold and the patient gets a severe allergic reaction to the antibiotic that requires hospitalization, the doc might also be sued for inappropriate prescription of an antibiotic for an obvious viral infection. In the military, the Feres doctrine effectively protects practitioners from personally being sued and effectively insulates against the perceived need to practice defensive medicine.
Long waiting lists for indicated surgery to treat non-elective diagnoses is obviously highly undesirable in any medical care system. Nonetheless, the countries with more "socialized" systems of medical care seem to have lower infant mortality and longer population longevity than in the U.S. It isn't easy, but we must be alert to ensure that our choice of statistics, and how those numbers are derived are valid metrics to test the hypothesis being studied and not merely less accurate surrogates for what really needs to be measured.