Star Destroyer was a term used to describe both a certain type of medium-sized[1] capital ship[2] used by the Galactic Republic, the Galactic Empire, the New Republic, the Imperial Remnant, the Galactic Federation of Free Alliances, the Alliance-in-exile, the Fel Empire and Darth Krayt's Sith Empire, as well as heavily armed warships in general.[3] The term originated with the idea of a warship powerful enough to destroy entire star systems, and did not necessarily indicate a destroyer type vessel.[3] Despite this, most designated Star Destroyers were analogous with other destroyer designs and were sometimes referred to as destroyers themselves.[4][3]