The Valkyries are female warlike virgins, who mounts upon horses and arms themselves with helmets and spears. The Valkyries decides who will die in a battle, they will hover over the battlefield, like birds over their prey. There will either be six, nine, or thirteen Valkyries at a time.
Half of the warriors that the Valkyries pick will go to Valhalla in Asgard. The other half will go to the Goddess Freya’s afterlife field Folkvangr. Freya always has the first pick, of the fallen Vikings.
Odin allows some of the Valkyries to take the form of beautiful white swans, but if a Valkyrie is seen by a human without her swanlike disguise, she will become an ordinary mortal and can never again return to Valhalla.