Brightswords are former warriors and heroes of Elysium who wielded swords during life, and are bound to them in death. Like the other Exalted of Elysium, when they are defeated, their lingering souls will try to re-arm and respawn, and must be dispatched before they can do so.
'...The Exalted, such as the blade-wielding Brightswords, are bound to the arms they carried when they fell in battle as mortals. When severed from those arms, they make a desperate grasp for them, so they can fight some more. In life, I knew so many warriors who would throw away their lives for glory, believing that the gods were on their side; refusing to consider (for how could they?) that their hated opponents felt the very same. Yet gods and mortals do look on this type of single-minded devotion with respect, and so, these envied souls do wind up in Elysium, where they can fight on and on, until they go blue in the face.'