These fallen soldiers are now zombies that still use Shield Bash, an attack they trained hard for while alive. A direct hit from it paralyzes the body.
The Zombie Knight is an enemy in Bravely Default. It attacks with its weapon or Shield Bash, an attack that does about the same damage with the additional effect of paralyzing its target. Though it has more HP than the bone soldiers it surrounds itself with, it has lower physical defense and an additional weakness in the form of the Lightning element. Attacking it with that, Fire or Light attacks, or restorative magic will make defeating it that much easier.
[view·edit·purge]A zombie is an animated corpse resurrected by mystical means, such as witchcraft. Since the late 19th century, zombies have acquired popularity in North American and European folklore.