I did some research on the Witch-king and i was very suprised at the amount of things he has achieved.
Witch-king
Nazgul lord of the Ringwraiths. The Witch-king was originally a sorcerer king in the Second Age who was given the first of the Nine Rings by the Lord of the Rings. He became the Lord of the Nazgul, or Ringwraiths.
During the Second Age, he commanded Saurons forces and fought his battles, but with the downfall of the Ring Lord and the taking of the One Ring, he was swept away into a shadow. However, since the One Ring was not destroyed, after a thousand years Sauron called him back from the shadows.
In 1300 of the Third Age, he rose up in the form of the Witch-king of Angmar. For nearly 700 years he made constant war on the Northern Kingdom of Arnor until 1974, when he destroyed its last stronghold in Arthedain. The next year, his own forces were routed and his evil kingdom of Angmar destroyed after the battle of Fornost. The destruction of the North-kingdom of the Dunedain having been achieved, in the year 2000, he turned his attentions to the South-kingdom of Gondor. He attacked and took Minas Ithil, and renamed it Minas Morgul. He fought in the realm of Gondor for a thousand years.
In 3018, disguised as one of the black riders, he led the other Ringwraiths to the Shire in search for the One Ring. At Weathertop, he wounded the Ringbearer, then pursued him as far as the Fords of Rivendell. In 3019, the Witch-King led his vast Morgul army and his Haradrim allies in an attack on the Whit Tower. In the Battle of Pelennor Fields he slew King Theoden, but in a strange fulfilment prophecy that he could not be slain by the hand of man-he met his death at the hands of maiden Eowyn and the hobbit Merry armed with a charmed elven sword.
Sources
*Lord of the Rings Appendix A, pg 12
*David Day's guide
*Encyclopedia of Arda at this
page
[ November 20, 2002: Message edited by: Iargwath ]