Operation Harmony

by Bleuinator

First published

Equestria is at war, and the Equestria Royal Marines are on the job. But one group of Marines known as the Demon Cavalry by their enemies and known as CIU 36 by others, are on a mission to protect The Elements and Equestria. The question is how does a prophesy made by Star Swirl the bearded connect to these Ponies?