Westfall borders the Elwynn Forest and prior to the events of Cataclysm, was mostly populated by humans not under the Alliance's complete control. The region was stolen right under the Alliance's nose by its own bitter people. Once a rich agricultural center, this land has lain fallow and forgotten since the Second War, but was held by the Defias Brotherhood for a time before the Cataclysm. Stormwind claimed the land as its own, but found little time to be concerned with it, with insufficient funds and might to retake the region.

A handful of farmers still tried to keep their land, and some even attempted a tithe to Stormwind every year, but most only grew enough to feed themselves. Bandits and gnolls raided those farms that remained, and Stormwind's resources were stretched too thin to protect the beleaguered populace. The Defias Brotherhood controlled much of the region, focused in the southern area of Moonbrook.

The People's Militia erected a last bastion of military power in the region at Sentinel Hill, from where they issued commands to anyone willing to aid the cause. Although most of the area's farms have fallen to disrepair, there are still a number of farmers who bravely (and desperately) cling to their holdings in spite of overwhelming odds.

All other Azeroth territories taken out of the Alliance's control had the Horde, the undead, or the demons behind them. Westfall fell to bitter humans soon after the Second War. The Defias Brotherhood, led by Edwin VanCleef, attempted to take Elwynn Forest but failed. Its members chose Westfall as their new home, and the farmers, still shaken from the Horde's attacks, put up little resistance. The Brotherhood found that the time to steal land from their own accepted ruler was when he was too concerned with orcs, undead, and demons to realize that a good chunk of the continent was gone. The rulers at Stormwind, even with knowledge of the Brotherhood's actions, considered other threats to be higher priorities and figured they'd get to Westfall eventually. They did not know the true threat Westfall presented, or even how much the city would miss the agricultural tributes the farmers made.

Once the breadbasket of the kingdom of Stormwind, the land of Westfall started to grow fallow after years of conflict and neglect had diminished its harvests. Crops could eventually no longer be cultivated in the fields, and the once-abundant mines were ultimately deserted. Even the former defenders from Stormwind pulled stake and abandoned the lonely realm when the cost of upkeep became too great.

Due to this lack of military protection Westfall was all but destroyed by the rebel Defias Brotherhood and its minions, who could easily take control of the poorly defended farmlands. The Brotherhood, composed mainly of thieves and bandits, made Westfall their new refuge. Employing everything from local superstitions to sabotaging mechanical harvest watchers, the Brotherhood stopped at nothing to scare away trespassers and protect their stolen treasures while the populace lived in squalor.

The thieves of the Brotherhood, on the other hand, apparently lived a fine life. Only a few Brotherhood members lived in Moonbrook, presumably acting as sentries. The bulk of the population occupied the Deadmines, which the Brotherhood converted into an underground fortress. Only the People's Militia, a volunteer military organization, rose to stand in their way, recruiting young heroes of the Alliance to strike back and regain what was stolen.