Many Klingon ships also make use of cloaking technology to hide the vessel from view. Published Friday, April 28 2017 NOTICE TO ALL CREDITORS AND OTHER CLAIMANTS All persons having claims against the estates listed below are required to send full details of their claims to Lovegroves, … Thanks — Preceding unsigned comment added by Srbernadette (talk • contribs) 01:30, 27 April 2017 (UTC) Srbernadette, there is no such category. Unable to expand in this direction, the Klingons started a war of expansion against the Federation, called The Four Years War. It ended in a humiliating loss by the Klingons, and they conceded territory to the Federation. This led to a period of total war which nearly resulted in the destruction of the Klingons by the Kinshaya.