As a enormous gas giant composed of mostly hydrogen, Saturn was deemed soewhat uninteresting by the Mantis and Imperials.
However, Imperial lazy thinking is the rebel's gain!
Using experimental technology and considerable lateral thinking, the rebels' were able to mine saturn's rings for millions of kilograms of highly magnetic comet material. This material was used to build habitable fake asteroids with magnetic interference powerful enough to distort Imperial Pulse Cannon based on The Moon.
Thus, Sayaron was born.