...those of the Quendi that came into the hands of Melkor were put in prison, and by slow arts of cruelty were corrupted and enslaved. And thus did Melkor breed the hideous race of the Orcs in mockery and envy of the Elves, of whom they were afterwards the bitterest foes. And deep in their dark hearts the Orcs loathed their Master.
The orcs of the mountains were stiffened and commanded by grim servants of Baradur, sent out long before to watch the passes. And though it was unknown to them the Ring, cut from Sauron's black hand two years before, was still laden with Sauron's evil will, and called to all his servants for their aid. The Dunedain had gone scarcely a mile when the orcs moved again.