They most be governed / guided by/ constrained by higher philosophy and principles. And even governed by the accountability to the citizenry / plebs. Just like elite soldiers - some can be good or bad actors. Some can do good through restraint. Some do a lot of damage through exercising their skills. The most elite soldiers aren’t gods, they shouldn’t just take and use power to wield on the weaker citizens - because they can - should they? Even if they agree amongst themselves… That’s how failed civilizations work.