The War of the Broken Staff was fought between the Necromancers of Heresh and the Wizards of the Silver Cities in 813-822 YSD.
After the purging of the Necromancers and the civil war in the Seven Cities, the Wizards had to modify the borders of their homeland, and named their new home the Silver Cities, with their central seat of power in Al-Safir. The Necromancers fled to Heresh, where they declared their independence and used the city of Nar-Heresh as a base to plan their revenge. They spent decades building an army, before launching a surprise assault on their foes.
The undead swarmed across the Silver Cities, destroying everything in their path, but after a decade of conflict, the Wizards gained the upper hand and drove their enemies back. The war ended with the Battle of Redwaters in 822, and the death of Belketh.
The Wizards broke up the legions of Heresh and shattered the kingdom, destroying many of the ancient cities. The fertile valleys were turned barren, and the surviving Necromancers had to go into hiding. Most retreated underground,while others started to infiltrate the Holy Falcon Empire.