In 2372, Regent Worf placed his younger brother Kurn in command of the Ya'Vang after he learned that the House of K'Tal had betrayed the Alliance. Kurn had been hoping that he would be given command of the Regent-class IKS Gorkon. However, that assignment went to Klag, who played a key in role in revealing the existence of the betrayal. (KE - Mirror Universe short story: "Family Matters") In recognition of his victory, Kurn was promoted to general and placed in command of the IKS Negh'Var. (DS9 - Mirror Universe novel: Saturn's Children)