Invasion of Vanaheim

The Invasion of Vanaheim was a conquest of the Vanir homeplanet of Vanaheim undertaken by the Marauders, sparked by the lack of peaceful influence of the Asgardians once the Bifrost Bridge was destroyed.

Background
Following the destruction of the Bifrost Bridge at the hands of Thor in the Duel at the Bifrost Bridge, the Asgardians were unable to intervene in attacks on the other Realms.

Invasion
The Marauders seized the opportunity of the Asgardian inability to travel in order to invade Vanaheim, and started to ransack and the Vanir villages.

Aftermath
However, as the Tesseract was taken into Asgard's possession, On their return to Asgard, Loki was imprisoned in the Asgardian Dungeons and the Tesseract was given to Heimdall so that he could fix the bridge.

Thor commanded the Asgardian army to travel to Vanaheim and the rest of the worlds taken by force, and restore peace in them.