There was once a man who dreamt of a perfect empire. He craved it so much that he rallied his people and immediately started on his conquest to his imaginary flawless world. In his wake, he left hatred, fear, terror.
And agony.
It all hung on the air like a bad stench to the point where even humans, who could not normally feel such things, could practically taste it. He broke lives and families and left trails of tears and blood. And there were none who saw these horrors he wrought on his own kind more than those of the odd legendary creatures what roamed the world in secret. They saw it and, as disgusting as it was and still is, most of them fed on the dead for one reason or another.
Most of these creatures were near to complete extinction, their races hanging on by barely a thread and housing only a couple hundred individuals at a time. Still, there were others who took one side or the other in the ensuing wars or simply chose to stay completely out of it.
However, not even these who try to avoid all can truly miss it completely. Many were captured by one side or another and forced into service for their captors' benefit. Covens, packs, and weyrs normally did not try to go after those captured, figuring those missing as already dead to them and mourning their loss before continuing on. Very rarely did one find a group that actually tried to carry out a rescue attempt and normally, in the end, they were killed trying as an example to those held captive.
Despite this and even more rare were the attempts that were actually successful, entire camps of soldiers found brutally murdered and the prize missing. All that was said on moments such as these was 'they seemed to come out of the night itself', no matter which side of the war you asked.
Hence under the main war, smaller ones were waged and won or lost, as is the way of warfare. Which side would you take and, in the bigger picture, would you survive?

