Morinehtar (“Darkness-slayer”) and Rómestámo (“East-helper”)

"Their task was to circumvent Sauron: to bring help to the few tribes of Men that had rebelled from Melkor-worship, to stir up rebellion … and after his first fall to search out his hiding (in which they failed) and to cause dissension and disarray among the dark East … They must have had very great influence on the history of the Second Age and Third Age in weakening and disarraying the forces of East … who would both in the Second Age and Third Age otherwise have … outnumbered the West." J.R.R. Tolkien