The Bonechewers stayed in Draenor when the orcs first crossed the Dark Portal, and were spared the defeat that ended the Second War. When Ner'zhul was preparing the Horde of Draenor to reopen the Dark Portal, the Bonechewers were attacked by his clan, the Shadowmoon clan, because one of their captains possessed the Skull of Gul'dan as a trophy. Their camp was obliterated and the skull reclaimed.[1]
Soon after, Tagar, along with Fenris of the Thunderlords, decided to attempt a foray into Azeroth, rising to the challenge and succeeding where their predecessors failed. Ner'zhul refused their suggestions and their clans were slaughtered.
Some of the Bonechewers survived and to this day they can be found scavenging used equipment in Hellfire Peninsula. Hellfire Ramparts is filled with Bonechewers.
Shadowstalker Kaide and Theloria Shadecloak could have informed their superiors about the situation and received reinforcements, however Theloria Shadecloak thought that it would leave Allerian Stronghold vulnerable to attack while Shadowstalker Kaide didn't want the inevitable scrutiny of Thrallmar.[9][10] With the help of adventurers they succeeded in slaying enough fel orcs to hamper their part in the Firewing Point project.