The Second Empire was a period in the history of the Klingon Empire.
During the Second Empire, Chancellor Mow'ga ordered a fleet of Klingon warships to invade and conquer the Breen. The fleet was never heard from again. (DS9: "'Til Death Do Us Part")
The Klingon Second Empire is not associated with, nor should it be confused with, the Second Dynasty. It was presumably preceded by the First Empire, and Worf's use of the past tense when talking about it suggests that it was a different entity from the 24th century Klingon Empire.
Due to Chancellor Mow'ga's apparent authority, the Second Empire is likely set after the reign of the last Emperor ended in the mid-21st century.
External links[]
- Second Klingon Empire at Memory Beta, the wiki for licensed Star Trek works