

The answer came in the form of the Nebulon-B frigate.

However, it was soon discovered that the maneuverable Rebel starfighters could easily outmatch the corvettes and the Empire needed a new solution. So for a while the Empire employed corvettes for escort duty. TIE fighters were impractical here since they lacked hyperdrive capability, and Star Destroyers were simply too expensive to be wasted on such menial tasks.

Due to attacks on Imperial convoys, the Empire needed to start protecting their shipments. The Nebulon-B frigate is very much the result of the Rebel Alliance.
