How did Diocletian improve the military? He created local armies.
He changed the training.
He hired more mercenaries.
He modernized the weapons.

C

Explanation:

Diocletian immediately set to work re-drawing the borders of the empire's provinces and organizing the provinces into new administrative units. He then reorganized the military, building up a stronger imperial army that fought major battles to reassert Roman dominance of disputed border regions.

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.

answer; psychological influences;