Elrond and Sauron, a personal vendetta?

[Gordis]

Originally Posted by Ibrîniðilpathânezel

And I can think of another: If you send absolutely everyone off to war, who takes care of what you left behind, and hope to return to? Who does the work to provide the supplies your army will need during a long war, and who will keep the supply lines open? It's not the kind of task that usually gets remembered when the war is over, but it is as essential to its success as those who go out and fight on the front lines. Celeborn may well have had unsung talents as an administrator rather than a military mind. Since he has a reputation as being wise, I think it would certainly demonstrate wisdom to be willing to remain behind where there is little glory, but considerable and much needed work to be done.

That makes a lot of sense to me. The 7 years-long siege of Barad-Dur would have been impossible without well organized supply lines.