Harald gave him even more warriors and now Styrbjörn set about trying to take the throne of Sweden. He sailed with a huge force which included 200 Danish longships in addition to his own Jomsvikings. When they arrived at Föret (Old Norse "Fyris") in Uppland, he burnt the ships in order to force his men to fight to the end. However, the Danish force changed its mind and returned to Denmark. Styrbjörn marched alone with his Jomsvikings to Gamla Uppsala. His uncle, however, was prepared and had sent for reinforcements from all directions.