Although the palace knights are powerful divine arts users and hold the social position of the elites, the truth is that, aside from the mock combat drills, they have almost no real fighting experience. For the elite soldiers that primarily stayed around the palace and usually avoided the dirty work, knights of god corps know little of the actual work out in the field.
Divine Guard Corp, soldiers are tasked by the castle to defend and patrol the city, and protecting public order.
They are able to question the credibility of their commander’s order. This is possible because, unlike the lower rank soldiers, those that were employed by the palace corps had a certain amount of freedom of thought.