They're elite units. Everyone in the group is incredibly driven and it takes a certain type of personality to get there. Esprit d' corps contributes to a highe

They're elite units. Everyone in the group is incredibly driven and it takes a certain type of personality to get there. Esprit d' corps contributes to a higher level of cohesion. Also because the units are smaller, leaders have to contribute more rather than simply delegating. They have skin in the game and they need to trust their subordinates with their lives, which puts a limit on self-serving motives when decision making. Just my take, I don't have any proof/ citations, but I do have military experience.