In Norse mythology, the einherjar are those who have died in battle and are brought to Valhalla by valkyries. In Valhalla, the einherjar eat their fill of the nightly resurrecting beast Sæhrímnir, and valkyries bring them mead from the udder of the goat Heiðrún. The einherjar prepare daily for the events of Ragnarök, when they will advance for an immense battle at the field of Vígríðr.

In Norse mythology Valhalla is the anglicised name for Old Norse: Valhǫll. It is described as a majestic hall located in Asgard and presided over by the god Odin. Half of those who die in combat enter Valhalla, while the other half are chosen by the goddess Freyja to reside in Fólkvangr. The masses of those killed in combat along with various legendary Germanic heroes and kings, live in Valhalla until Ragnarök when they will march out of its many doors to fight in aid of Odin against the jötnar.