In Norse mythology, the Valkyries are tasked with selecting the slain from battle, guiding worthy warriors to Valhalla, the hall of the slain. They serve the god Odin, ensuring that these heroes are honored and prepared for the afterlife. The Valkyries embody the themes of fate and choice, as they decide which warriors live and die during combat. Their presence reflects the importance of honor, bravery, and the warrior ethos in Norse culture, connecting the mortal realm with the divine and the afterlife.