 As part of consolidating his control, Magnus destroyed the Jomsborg, headquarters of the Jomsvikings.Sweyn fled east and returned as one of the leaders of an invasion by the Wends in 1043, which Magnus decisively defeated at the Battle of Lyrskov Heath, near Hedeby.In the battle, Magnus wielded Saint Olaf's battle-axe, named Hel after the goddess of death.