The world has been left scarred.
The Iluvar, in their hubris, unleashed hell fire upon the world they considered theirs. If they could not rule it, then why should the upstarts be allowed to? The scars left on the world still smolder 200 years later, and the political climate is still reeling.
Nations have relied on covert action, aggressive diplomacy, and deniable mercenary groups since that war. Enterprising individuals have created entire armies for sale to the highest bidder.
The Afterwar supplement will provide everything you need.
This world will provide for any campaign, whether during the disastrous Last Wars, or the climate of intrigue in its present.