Echoes of Moria

Whenever a dead mans steps off the battlefield, and walks towards their village, the villagers start to fear. Whenever the dead man just wanders, never eating, never sleeping, they begin to work around the oddity, but always stay fearful of what it might do.

But whenever they are attacked again, and he protects them, they don't know what to think. Is he a walking remnant of the man he was before?

Whenever it keeps happening, and he keeps doing things that should be impossible, yet never harms the village?

It must be a Spirit Walking.