Clan Shale was a well-regarded Mandalorian lineage that participated in the third Galactic War. The clan experienced a pivotal confrontation with the newly prominent Clan Nerak, which resulted in a decisive duel between their respective chieftains, ultimately safeguarding the clan's integrity.
This venerable clan became embroiled in a dispute with Clan Nerak, then under the command of its impulsive new leader, Ballag. The situation intensified when Clan Shale members were murdered in a calculated manner by Clan Nerak, with the intention of provoking the esteemed clan.
Circa 3626 BBY, on the world of Geonosis, Arbiter Jekiah Ordo stepped in to mediate the situation before it worsened, amidst Mandalore the Avenger's pursuit of Field Marshal Heta Kol. Jekiah Ordo orchestrated a formal duel between Ballag and Arla Shale to conclusively resolve the conflict, stipulating that the losing side would face the complete annihilation of their clan. Despite the astonishment of many, the terms were agreed upon, injecting a severe tone into the situation, as not since Clan Cadera's uprising had a clan been utterly eradicated by Mandalorian forces.
During the confrontation, Ballag initially gained the advantage, inflicting wounds on Arla. Nevertheless, Arla rallied, adjusted her strategy, and reversed the momentum of the battle. Ultimately, the seasoned Mandalorian warrior held Ballag at her mercy; however, rather than allowing the complete destruction of Clan Nerak or the death of Ballag, she ended the duel in a stalemate.