Subordinates should not mindlessly obey their superiors. Subordinates who believe that their superior has not fully considered a matter should say so. But, once a superior has made clear an informed decision, the subordinate should carry it out with vigor and enthusiasm, regardless of any contrary opinions the subordinate may hold. Disagreement is not disloyalty. A modest level of conflict is healthy. Still, there are limitless ways subordinates can indirectly sabotage their superiors. Never tolerate such sabotage from anyone anywhere in your chain of command, even when it may suit your short-term goals. Shoot any offenders at dawn in the middle of the nearest town square.