Ash War (concept)
The Ash War was a bitterly fought campaign in northeastern Chevalie between 1248 IS to 1251 IS between the forces of Eastern Chevalie, led by Duke Rhaon II den va Sissaux against the imperial remnants led by Governor Arch-Legon Nicanoneus 'the Black Sun'. After his victory at the end of the Black Mountain War, an attempt was made on Nicanoneus' life by loyal agents of Governor Methiad Dethylcan, who were discovered to be largely paid for by her ally, Duke Rhaon. In desperate need of supplies to fight the Sjalvolki Migrations, Nicanoneus used this as an excuse for a campaign against a weakened Chevalie.
While the Aversarians initially made great gains, the mysterious arrival of the Partic tribe of Calagonii soon threw the situation into doubt. Partic Magi wreaked great havoc on Aversarian supply lines, and the combined force soon drove the Aversarian forces back east. The lines eventually settled in eastern Muisle, where trenches and battlements were dug so that Aversarian Magi could throw fire onto the fields while obscuring themselves from Chevalien griffon riders. This period of static warfare was reinforced by the creation of multiple siege castles by both sides.
The war ended in 1251 IS when the Marcher-Partic alliance commenced an all-out assault against Nicanoneus' forces, timing their assault alongside a raid by the Lich Ilnar Illadir. Nicanoneus was maimed by a firebolt from a Partic Magi and during his two-week coma, his forces were routed back east into the Black Mountains, where he would reorganize his men and realm into Epavarion - the Ebony League. The Marchers on the other hand, would later be betrayed by the Partics in the Rohrian Annex, leading to the loss of Eastern Rohr to the invaders.