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Like ancient warriors' skeletons, riding on tall, dessicated equine bones.
Their bones, amid the surrounding white snow bathed in sunlight, emitted a ghastly pale glow.
In their hollow eye sockets flickered ghostly blue flames, as if a troop had marched straight out of Hell.
The skeleton cavalrymen charged fearlessly into the horde of zombies, knocking over swathes of them, their rotting bodies skewered on lances and hoisted high.
Screams and the pounding of hooves intertwined, creating a gruesome and eerie tableau.
Skeleton cavalry?
Survivors behind the walls stared wide-eyed at the skirmish on the battlefield.
In everyone's eyes shone terror and disbelief.
Zombies alone had already turned the world into this nightmare.
And now, a mysterious group of skeletons had appeared.
They seemed even more ferocious.
"What do we do? These skeletons are even tougher than zombies."
"Damn! Now we've got everything."
"We're done for, all of us are finished."