The White Council assaults Dol Guldur?

[radagastly]

#2:
Thinlómien:

#2 My educated guess () would be Gandalf, Saruman, Galadriel, Círdan, Elrond and Celeborn at least. Probably Radagast too. Maybe some others.

To that list I would add Glorfindel (that's the main reason he was sent back to Middle Earth in the first place) and possibly Gildor (when he wasn't busy wandering with his company.) Maybe Thranduil as well, though I often wonder why he was out partying in the woods while the White Council was preparing for battle within his own borders.

#4: My guess would be they brought a small contingent of elvish soldiers to clean up any fleeing orcs and contain the skirmish. Most of the Necromancers troups would have been sent to fortify Mordor by then, since Sauron was intending on going there all along.

Not sure about any of the other questions. This is all theory anyway. I don't think Tolkien provided many details on this particular chapter.