And here's something I've been working on for a couple of days.
VIKINGS AND THEIR FATEFUL DEATHS
The Scandinavians of the early Iron Age, we're calling them Vikings for short, believed that their fates were predestined, and that nothing could change it, not even Odin himself. The belief was that three goddesses called Norns sat near the well Urdarbrunnen ("the well of fate"), by the roots of the world tree Yggdrasil. Each of the three Norns was responsible for a specific part of a being's life. Skuld for the past, Verdandi for the current and Urd for the future. Sources differ a little; some say that they wove a tapestry over all life, other that they carved runes into wooden sticks ("runkavlar" in Swedish). Whichever, they controlled the fates of all men and gods, and presumably also giants and monsters.
This may be why the Vikings were risking their lives so readily, both in combat but also in exploration. It wasn't really anything they could do about their death, so why no live life to the fullest. But knowing when you would die was bad, according to the stories, especially in combat. If you knew you would or would not die in a battle this might cause you not to fight at the top of your ability, or for your life. The Vikings called this being "feig", in modern Scandinavian this has come to mean "cowardly".
Vikings were convinced that the best way to die was in battle. If you for example died by disease or suicide, you were taken to Helheim to a non-existence until RagnarökkR. Although there are stories about a Niflhel, were you go if you die in Helheim. If you died by drowning, taken by Ran or one of her nine daughters, you ended up in the halls of Aegir, which wasn't a bad place, but not as glorious as Valhall. So better to die in battle.
Before the battle, or as a signal to start fighting, a spear was flung over the battle field, promising all the fallen to Odin. One of Odin's attributes is the spear Gungner ("rocking"). Battle fields were often called "valplats" (possibly "the place of choice") by the Skalds. Riding all around the warriors were the (invisible) Valkyrias, looking for warriors whose fate was nearing, but also protecting those who should live past the battle. The dead were brought to Godheim, half of the fallen were given, but Odin had first choice, to Freya and the rest were brought to Valhall ("the hall of the chosen"), to feast with Odin. The fact that the love goddess Freya receives half of the warriors does clearly indicate that Freya's origins come from the Greek goddess Pallas-Athena.
Valhall is enormous, the walls and ceilings are made out of golden spear shafts, the roof of golden shields. On the benches lie chain mails instead of animal skins. At the end of the hall, on a dais, sits Odin, with the ravens Hugin ("thought") and Munin ("mind") on his shoulders, and by his feet lie the two wolfs Gere ("voracious") and the Freke ("the spear stabbing" on account of his big teeth). Odin never eats, and drinks wine only. The warriors, now called Einherjar ("of one army"), eats and drinks all night long. The meat comes from the pig Särimmner, who never runs out of flesh (or is killed to live again the next day). The flesh is boiled in the pot Eldrimmner ("blackened by fire"), by the cook Andrimmner ("sooty face"). On the roof of Valhall grasses the goat Heidrun from which udders runs four rivers of mead of the highest quality for the thirsty warriors.
It was said that every day the Einherjar practised their weapon skills, and if anyone were wounded or killed he were immediately healed so that he could go back to practising again. There is no telling exactly how many Einherjar there were, but it is said that Valhall had 640 portals, and out of each one of those 960 Einherjar can march abreast. That is 614,400 warriors in each row!