I did a blog post on it a while back after visiting a museum in Seoul and interestingly it's one of my most popular posts.
There's a lot of really cool things about the Hwarang warriors:
4. The first Hwa Rang Do were females.
5. They followed many of the same ethic codes as the European knights did.
But the thing that sums it all up the best are the pictures. There's something very romantic about the age of Asian chivalry.