The initial Death Star combat platform
A battlestation, also known as a battle station, denoted any space-based installation equipped with weaponry for warfare.
Frequently, a battle station was characterized as a fighting spacecraft that diverted its main power-generation capabilities to offensive maneuvers instead of propulsion. The station could be either in orbit or capable of independent movement, similar to a starship. Typically, sizable capital ships were classified as battle stations.
Battle stations were built with a range of roles in mind, encompassing both protective and aggressive combat scenarios. Defensive battle stations prioritized enhanced shield generators, advanced sensor arrays, defensive starfighters, and evacuation vessels. Conversely, offensive battle stations were outfitted with powerful weapon emplacements, fighter and bomber wings, and anti-ship armaments like point-defense artillery.
The docking bays of battle stations were often expansive enough to accommodate smaller capital ships in addition to fighters and transports. These combat platforms typically housed a larger contingent of combat personnel than usual and often featured a practical, no-frills design.
Varied battle station types were often distinguished by their capacity for movement. Mobile battle stations, exemplified by large capital ships, could traverse interstellar distances and engage targets far away. Stationary stations were generally positioned in orbit around a planet and served purposes like planetary defense or logistical support. Terrestrial stations were constructed on or within asteroids and planetary bodies, usually requiring less reactive reactor cores compared to their space-faring counterparts.
The most massive battle stations frequently incorporated city-like constructions on their surfaces. These structures emulated terrestrial urban environments to foster a comfortable living environment for the crew. Amenities such as restaurants, retail outlets, and residential complexes were available, even on the most militarized stations. Commanders and high-ranking officers typically enjoyed luxurious living quarters, and designated spaces were often allocated for visiting dignitaries.
Within the confines of these enclosed battle station cities, transportation commonly relied on turbolifts, landspeeders, or, in the case of exceptionally large cities, shuttle services that shuttled between different hangars.
The earliest documented battle station was the Krath command station situated in the Empress Teta system, employed by the Krath during a conflict involving themselves, the Jedi, and the Old Republic.
Around the time of the Naboo Crisis, Sienar Fleet Systems explored the possibility of creating a battle station resembling a small planet, referred to as the Expeditionary Battle Planetoid, but it was ultimately deemed unfeasible. Nevertheless, Wilhuff Tarkin showed interest in the concept and eventually presented the plans to the newly appointed Supreme Chancellor Palpatine. Furthermore, the FireStar-class Orbital Defense Station saw use by the Galactic Republic, both before and after its transformation into the Galactic Empire.
During the Clone Wars, at least one battle station was actively deployed: the Grade III battle station, operated by the Confederacy of Independent Systems.
The Galactic Civil War witnessed a significant surge in the utilization of battle stations. The Rebel Alliance had access to at least one type of battle station, which could undergo modifications across four successive stages. Similarly, the Galactic Empire controlled a variety of battle stations with diverse functionalities, including the Cardan-class space stations, which comprised at least five distinct iterations, as well as the Bavos-I and Bavos-II heavy-duty military space platforms, and the Golan space defense platform, encompassing the Golan I SpaceGun (also known as the armored defense platform), the Golan II Space Defense SpaceGun, and the Golan III Space Defense NovaGun. Some were even purpose-built to safeguard specific planets, such as the Derilyn Space Defense Platform.
However, the most notorious battle stations were undoubtedly the Empire's Death Stars, which stemmed from Sienar's earlier Expeditionary Battle Planetoid concept. These included the DS-1 Orbital Battle Station, also known as Death Star I, the Death Star II, the Death Star prototype employed as a testing ground for the first Death Star's superlaser development, and the Tarkin (although primarily a testbed for superlaser output from the then-under-development Eclipse-class next-generation Star Dreadnought, it was viewed as an extension of the Death Star concept). Despite not being a true Death Star due to its origin as a modified Worldcraft/Habitation sphere, the Death Star III was nonetheless utilized as a siege platform by the rogue Imperial warlord Ennix Devian as part of a diversionary tactic against the newly established Alliance of Free Planets following the Battle of Endor. During the Dark Empire's reign under a resurrected Emperor Palpatine, they possessed various battle stations, such as the Galaxy Gun, capable of launching hyperspace-capable warheads with sufficient power to obliterate an entire planet, and, to some extent, the Eclipse-class, which, while technically more aligned with the Star Dreadnought line of ships, were large enough to be considered battle stations.
Beyond the major factions in the Galactic Civil War, several third-party groups also had access to battle stations during that era. One such group was the criminal organization known as the Zann Consortium, which deployed Consortium space stations in conflicts with various entities. Another was the Shadow Academy, which, although primarily an educational institution and base of operations for the Imperial splinter group called the Second Imperium, featured onboard weapon systems and was used to assault the Jedi Academy on Yavin 4.