The Galadhrim Knights. Beautiful elven cavalry, of the Galadhrim from Lothlorien.
Equipped with the fearsome elven glaive, and may also be given either shield or longbow.
I have to admit, I like the similarity to the Samurai in their style, which I found quite noticeably after watching The Last Samurai, with Tom Cruise. Especially the mounted longbow armed riders. There is definitely an oriental feel to these troops, which I think mirrors the elite status of both the Elves and Samurai, in warfare.