Asgard-Jotunheim War

The Battle of Tønsberg was the final battle in the great war between the Asgardians and Frost Giants.

Background
The Frost Giants had always fought with the Asgardians for power. The Asgardians had one final chance to defeat the Frost Giants.

Battle
Odin led a force of Asgardians warriors against the Frost Giants in defense of people on Earth. The Asgardians beat the Jotuns back to their home realm of Jotunheim where Odin personally defeated the Jotun King Laufey while suffering the loss of his right eye. Afterwards, Odin granted the Jotuns mercy and offered them a truce between the two races. In the process, he also confiscated the Casket of Ancient Winters that gave them much of their power and rescued a baby Jotun who had been abandoned in the conflict by his father, Laufey.

Aftermath
The infant Loki grew up as a brother to Odin 's real son Thor, and Odin kept the boy's heritage a secret in the hope that he would one day come to end the enmity between the two races.