Battle of Süntel
The Battle of Süntel was a land battle that took place between Saxon rebels led by Widukind and a detachment of Frankish forces led by envoys of Charlemagne named Adalgis, Geilo, and Worad at Süntel in 782 during the Saxon Wars. The result was a victory for the Saxons, resulting in the deaths of Adalgis, Geilo, four counts, and 20 other noblemen. Shortly following the loss, Charlemagne had 4,500 rebels beheaded on a single day, in an event sometimes known as the Verden Massacre.
