Battle of Lake Vialta
Military action
A human warlord unites several tribes only to get annihilated by the forces of elven kingdoms of Peteneia and Avareia.
A human warlord under the name of Maghir the Horsehead united a group of tribes and attempted to push northward.
While succesfull at the beginning - causing massive damages to kingdom of Peteneia - he then decided to march westward, entering the kingdom of Avereia. During the battle his infantry forces were outmaneuvred and wiped out, stopping human expansion to the north for long time.