This painting shows a key event from the First Crusade. How are the Crusaders identified in the painting?

by their armor

by their weapons and horses

by the red crosses on their backs

by the thrones on which they are sitting

The Person on the throne is Guy of Lusignan, the King of Jerusalem, if that helps.

An informal structure in a bureaucracy would be something like so-called "office politics". where there's a formal structure set up for the organization, but then an informal subculture as well that has a way of organizing the bureaucracy further. this can be positive because it sets up an added degree of organization, albeit informal, within the bureaucracy.