Battle of the Tongues

The  was a major battle during the Dragons' Return during the Fourth Era. Taking place within Sovngarde itself the battle of fought between Alduin and the Dragonborn, aided by four Heroes of Sovngarde.

Prelude
Following the capture of Alduin's second-in-command Odahviing, the Dragonborn learned of Alduin's portal to Sovngarde and, with help from Odahviing, proceeded to make way with earnest to the portal, preparing to fight Alduin to the death. Upon entering Sovngarde the Dragonborn found the realm covered in a dense mist cast upon the realm by Alduin himself. The Dragonborn sought help from the Heroes of Sovngarde to help in his battle with Alduin.

The Battle
Upon exiting Shor's Hall the Dragonborn and the Heroes of Sovngarde cleared the skies with their Thu'um in order to face Alduin on even footing. After relentless attacks upon the mist Alduin's strength wavered and the mist fell. Alduin presented himself to the Dragonborn and the battle begun.

The Dragonborn and the Heroes of Sovngarde used the shout Dragonrend against Alduin to combat him. With much battle by, sword, axe, arrows and magic, the Dragonborn and his allies defeated Alduin, with his scales shattering into pieces and Alduin being destroyed.

Aftermarth
After the battle Tsun, a Hero of Sovngarde, guaranteed the Dragonborn that this battle would be sung in Shor's Halls for eternity. Tsun sent the Dragonborn back to Nirn where the dragon threat was still a problem, but with their leader dead, the dragons were weakened.

The Dragonborn reappeared in Nirn near the summit of the Throat of the World to be greeted by not only Paarthurnax, but many other dragons. In turn, each dragon accepted the strength of the Dragonborn's Thu'um, and rose into the air and breathed a burst of fire to confirm the fealty to the Dragonborn. Finally, Paarthurnax rose into the air, lingering only long enough to explain his plan to spread The Way of the Voice to all other dragons across Tamriel, whether they wanted to hear it or not. And with that, Alduin was finally defeated and his dominion over the remaining dragons shattered. But as noted by the Dragonborn, Alduin's soul was never absorbed, leaving the question remaining if Alduin can ever be truly defeated...