The Military forces you to strip yourself of your preconceptions. To see things as they are. No lying to yourself, no lying to others, that is a great way to get called out, its expected and encouraged, but you better be right. The concept of this if foreign to civilians. Most civilians would be down right offended at the idea if questioning someone's beliefs, its expected in the military. INTJ's that I have met seem to do this naturally as Civilians but they are the exception. Academic debate, papers, also does this but the acts are again frowned on outside of that environment. After years of this Military members have a core belief system that has been striped and rebuilt, with all the fluffy civy nonsense discarded. All this happens during those in-between times in the Military, the times we spent waiting for the next event, training, location to be at, bullshitting to each other. Someone inevitably say's something so naïve or untrue, they get called out on it. This happens enough and you start examining yourself. You want to fit in, belong, your subconscious starts to reorient its self and realign your thinking.