Einherjar (also spelled Einheriar), in Norse mythology, the chosen slain. The Vikings believed that champions who died courageously on the battlefield were taken up by the Valkyries, handmaidens of the principal god, Odin, after death. According to the 'Prose (or Younger) Edda', Odin considered all those who fell valiantly in battle to be his adopted sons. The Valkyries would gather these souls of heroes and bring them to Valhalla, the "Hall of the Slain" in the heavenly realm of Asgard, or sometimes to another great hall called Vingolf. Here they would alternate between feasting and practicing their warrior skills.
In Valhalla, the cook, named Andrimne (or Andhrimnir), would prepare a stew each day from the meat of a boar named Saerimne (or Saehrimnir), in a cauldron called Eldrimne (or Eldhrimnir). The Einherjar would eat all they wanted, and afterward the boar would be whole and alive, ready to become the next day's meal again. The Einherjar could also drink all they wanted; rivers of sparkling mead flowed instead of milk from a goat named Heidrun. Odin would be their host as they feasted in merriment, sitting at his place with a raven on either shoulder and his two wolves at his feet. The Valkyries would wait on the Einherjar and serve them all.
Each morning the Einherjar set out to battle each other, but afterward whoever had been killed or wounded would rise up again, healed and ready to fight again the next day. This pattern would continue until the time of Ragnarok, the battle that was to take place at the end of the world. A cock named Gullinkambi (Golden Comb) would crow, signaling that the battle was about to begin, and they would march out as the legions of Odin, chief of the gods, and fight with him and the other gods against the forces of evil.