When the republic commissioned the Corellian Engineering Corporation to construct a line of cruisers for diplomatic purposes the manufacturers also designed a smaller escort ship known as the C-22 “peacekeeper”.
As the republic fell on hard times the once-unarmed peacekeeper was refined to have more “influence” during negotiations. A pair of laser cannons was added to the ship along with oversized communications and radar systems to allow the ship the ability to take on solo missions. The final touch was to sling a giant laser cannon beneath the ship, with enough power to punch a hole through the toughest hulls. After being transformed pilots began to commonly refer to the C-22 as the R-wing.