The Battle of Scarif (Lore)
This was the first major battle fought in 0 BBY between the Alliance to Restore the Republic and the Galactic Empire, marking the beginning of the five-year Galactic Civil War.
Prior to the battle, Alliance Intelligence intercepted information suggesting the existence of a planet killing Death Star, as well as a fatal flaw in the design placed there by renowned scientist Galen Erso.
Though the Alliance High Command refused to openly oppose the Empire, Galen's daughter, Jeyn Erso and Andor Cassian led a small unit of Rebel soldiers and other allies and defied orders, taking it upon themselves to infiltrate the heavily-guarded Citadel Tower base on Scarif to retrieve the Death Star plans. Under the callsign Rogue One, the unit infiltrated Scarif's planetary shield in a stolen cargo shuttle and proceeded to wage a guerrilla assault on the Citadel's outskirts, drawing away Imperial forces so that Andor, Erso, and the droid K-2SO could infiltrate the facility. Director Orson Krennic, the former commander of the Death Star, attempted to stop Erso and Andor from stealing the plans, but the heavily-outnumbered Rebels received support from the Alliance Fleet under Admiral Raddus, whose forces engaged the Imperial Star Destroyers above Scarif and worked to destroy the Shield Gate protecting the planet.
With the Shield Gate's destruction, Rogue One was able to transmit the stolen plans to the fleet above, though all remaining Rebel ground forces were eradicated by a low-powered blast from the newly-arrived Death Star that destroyed the Citadel and surrounding area. The Sith Lord Darth Vader's forces made short work of the rebel ships that did not manage to retreat, but Princess Leia Organa managed to escape the battle in the Tantive IV; Vader pursued her to the planet Tatooine and captured her there, but the plans were already out of his reach. The plans eventually found their way to the Alliance, who used them to pinpoint the Death Star's weakness and destroy it at the Battle of Yavin.
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