Professor Schlueter takes a stab at answering the question.
David A. Schlueter, The Military Justice Conundrum: Justice or Discipline?, 215 MIL. L. REV. 1 (2013).
Why even ask the question let alone seek an answer. Well it depends on where you stand on the current issue of a commander’s authority over courts-martials. If you want to maintain the current system you have to counter those who argue for change. If you want change you have to convince commanders their ability to pursue the mission will not be compromised because of an inability to maintain discipline.
Check it out.