"My friends! My family! My kin! A long way we have come, but this is not the end! Remember our fallen Kinsmen, Laerdan and Narmeleth, and let this event fill your minds and bodies with rage and willpower. We ride to Angmar one last time, and we will leave none alive. Our House will prevail once again! But there is no time for other words. Ride now! Ride to war!", Ornessar shouted.
"To war!", all the elves of the House of Ornessë shouted in reply.
And so they started moving; riding swiftly like the wind. They rode through the Trollshaws, the Lone-Lands, Bree-land, the North Downs and they eventually made their way to Fasach-Larran in Angmar. Of course, it is not common to see hundreds of fully-armoured elves running around, so any mortal who might have seen them would of course stare in wonder and awe, but they did not mind.
In Fasach-Larran they split in three groups. Alfirieth led one-third of the elves to Fasach-Falroid, where they would assault Carn Dûm from the South. Ornessë and Ornessar led the other two-thirds of the elves to Malenhad, and they split somewhere around Nan Gurth. Ornessë led one-third of the elves to Barad Gularan, which was retaken swiftly by them, and they used it strategically, while Ornessar and the rest of the elves went on to assault Carn Dûm from the east. And so they did. Once Ornessar's and Alfirieth's group rejoined, they went inside Carn Dûm and they left no Angmarim alive.
To avenge Narmeleth and Laerdan, and for honour, Ornessar took the Iron Crown of Angmar and wore it, and mockingly he sat on the Throne mockingly, holding the head of the beheaded leader of the Angmarim. After their crusade ended, they took all that they wanted from Carn Dûm and Barad Gularan and they made their way back to Rivendell, where they stored it all safely in the Vault of their House.