Oath of Swords is the first novel in the War God fantasy series by American author David Weber. It follows the adventures of Bahzell Bahnakson and his friend Brandark; the format is a swords-and-sorcery land with dwarves, elves, humans, hradani—the Four Races. There is a pantheon of Gods, some good—the Gods of Light—and some vile—the Dark Gods.