Likewise after these squadrons he was to put the young men, equipped with lances, and behind these to set the company of aged men, who would support their comrades with what one might call a veteran valour if they faltered; next, a skilful reckoner should attach wings of slingers to stand behind the ranks of their fellows and attack the enemy from a distance with missiles.

After these he was to enroll men of any age or rank indiscriminately, without heed of their estate.

Moreover, he was to draw up the rear like the vanguard, in three separated divisions, and arranged in ranks similarly proportioned.

The back of this, joining on to the body in front would protect it by facing in the opposite direction.

But if a sea-battle happened to occur, he should withdraw a portion of his fleet, which when he began the intended engagement, was to cruise round that of the enemy, wheeling to and fro continually.
Equipped with this system of warfare, he forestalled matters in Sweden, and killed Ing and Olaf as they were making ready to fight.