[Lindale]

In Concerning Galadriel and Celeborn, she is indeed a sort of warrior; but she didn't join Feanaro in the Kinslaying; she defended her mother's kindred with Celeborn, who is a Telerin Elf here. (Celeborn's kinship is somewhat confusing, just check out the UT). And in the Third Age she is acknowledged the greatest Elf in ME; she alone remained of the leaders in rebellion from Aman. Galadriel and Feanor are the greatest of the Noldor (of all times?). Although I read something about Luthien being the greatest of all Elves.

But though she played a part in the destruction of the Ring, she had no physical participation(ie, she didn't fight in the war herself nor personally go with the Fellowship) like Gandalf who went. She is sort of an inspiration for them (save maybe Boromir, who doubted her). Her gifts proved very useful even after the War (Sam's fertilizer stuff), and during the Quest itself (Frodo's vial, Legolas's bow, Gandalf).