Thunderous drum beats permeated the air.
Towering Giants wielding their weapons of war shouted their war cries.
Beasts of all shapes and sizes roared in defiance.
And the Spectres of the Undead screamed in the sky as they waited for the Aesirs in the Plains of Asgard. This was the unwritten rule that both parties had agreed upon, and so they formed their ranks and waited for their opponents to arrive.
The Aesirs, the proud defenders of the Tree of Yggdrasil, answered their challenge. The gates of Valhalla opened and millions of human warriors marched towards the greatest battle that would decide the destiny of the entire world.
They were the human warriors who had been slain on the battlefield, and personally ferried by the Valkyries back to Asgard, in order to fight for the long-standing peace of the Nine Realms.