After he was re-embodied, and aside from helping Frodo get to Rivendell, did Glorfindel do anything to aid in the war against Sauron?
After the fall of Arthedain in TA 1974, the forces of Angmar were defeated by an expeditionary force sent from Gondor, in alliance with an Elvish force sent from Rivendell. Glorfindel led the Elvish contingent, and faced down the Witch King himself.
Not part of the War of the Ring, but certainly a significant action against Sauron.
(Source: LOTR appendix A, part (iv))