
He fought in the Age's climactic war against the Last Alliance of Elves and Men between SA 3434 and SA 3441, when the Dark Lord was eventually defeated and the One Ring cut from him.

For the next 1200 years the greatest among them, known simply as the Lord of the Nazgûl, would serve Sauron as the commander of his army. The first sighting of the Nazgûl in Middle-earth was reported in SA 2251. The only certainty is that eventually he and all the others slipped into the shadow-world and became Nazgûl – Ringwraiths – enslaved wholly to the will of Sauron. The mightiest of all of them was likely a king and a powerful sorcerer, possibly of Númenórean heritage, but little is known of his (or the others') earthly life except that over the coming centuries they prospered as their power, wealth and mortal lifespans extended under the corrupting influence of their rings. In SA 1600 Sauron created and first donned the One Ring, and in SA 1693 began the War of the Elves and Sauron during which the Dark Lord recovered the Nine Rings and gave them to mighty lords and rulers of Men. The forging of the Rings of Power began some 1500 years into the Second Age. The Witch-king is gifted his Ring of Power as a human 5.2.3 The Lord of the Rings: Aragorn's Questīiography The Second Age: the Nine Rings and the advent of the Nazgûl.5.2.1 The Lord of the Rings: The Return of the King.5.1.1 The Lord of the Rings film trilogy.1.5 Return to Mordor and the rise of Minas Morgul.1.3 The Witch-king's conquest of the North.1.2 The Third Age: return and the arising of Angmar.1.1 The Second Age: the Nine Rings and the advent of the Nazgûl.He led Sauron's armies in the War of the Ring, stabbed Frodo Baggins on Weathertop during the first months of Frodo's venture out of the Shire to Rivendell, and at the Battle of the Pelennor Fields he broke the gates of Minas Tirith, killed King Théoden of Rohan, and met his own fate. The Witch-king returned to Mordor to facilitate Sauron's return to power, then took Gondor's city of Minas Ithil and refortified it as Minas Morgul, and snuffed out the line of kings of Gondor. After Sauron's defeat by the Last Alliance, he eventually reappeared to found the evil realm of Angmar, where he gained the epithet "Witch-king" and ruled for almost seven centuries until the kingdom of Arnor was conquered. His true identity is unknown once a mortal king of Men, he was corrupted by one of the nine Rings of Power, becoming an undying wraith in the service of Sauron.

The Lord of the Nazgûl, also known as the Witch-king of Angmar, led the Nazgûl (Ringwraiths) and was Sauron's second-in-command in the Second and Third Ages. " - The Return of the King, " The Battle of the Pelennor Fields"

now he was come again, bringing ruin, turning hope to despair, and victory to death. A crown of steel he bore, but between rim and robe naught was there to see, save only a deadly gleam of eyes: the Lord of the Nazgûl. John Stephenson (The Return of the King), Andy Serkis (The Fellowship of the Ring) " Upon it sat a shape, black-mantled, huge and threatening.
