"The first four Executor-class ships were constructed in the months following the Battle of Yavin and the destruction of the first Death Star. Before the Battle of Yavin Imperial Navy engineer Lira Wessex designed these sleek, dark, immense vessels to inspire dread in any possible opponent." "The Alliance brain trust of General Jan Dodonna and engineer Walex Blissex developed the A-wing starfighter after examining the role of speed in the Battle of Yavin and the sleek fighters developed by the Tamuuz-an. The top-secret result of their experimentation was the A-wing, the fastest vessel of the Galactic Civil War. " "Although the Interceptor only made its appearence in Return of the Jedi, the Star Wars Sourcebook (for the Star Wars Roleplaying Game) has stated that the Interceptor has existed at the time of the Battle of Yavin, where Imperial Star Destroyer's 6 TIE squadrons was a squadron of Interceptors (4 squadrons of standard TIE Fighters, 1 squadron of TIE bombers)." “The first hastily-converted MC80 star cruiser appeared shortly before the Battle of Yavin. Soon, many of these vessels were in service with the Rebel Alliance, providing a much-needed boost in military power.â€