B-wings were mainly used for assaults on capital ships, such as Imperator-class Star Destroyers or Interdictor-class Star Destroyers. They usually had to be escorted around enemy starfighters by X-wings or A-wings before they could reach their bombing destination.
The B-wing was designed by Gial Ackbar in between Star Wars Episode V: The Empire Strikes Back and Star Wars Episode VI: Return of The Jedi.
Notable B-wing squadrons were Blue Squadron, who flew at the Battle of Endor. As well as Nova Squadron, who helped destroy Warlord Zsinj's Executor-class Super Star Destroyer, Razor's Kiss. Losing this critical ship assisted the New Republic in taking down the tyrannical Warlord.