The Ryoone campaign represents a series of battles that took place over the course of a month on the world of Ryoone amidst the broader Galactic Civil War.
Following the Battle of Endor, Churhee's Riflemen continued their fight against the forces of the Galactic Empire, receiving assistance from the New Republic Army.
The most well-known example of this partnership was a month-long series of conflicts that occurred on the planet Ryoone. Throughout this campaign, Churhee's Riflemen were pitted against the Empire's Lightning Squadron.
Once the New Republic had captured Coruscant, Churhee's Riflemen grew uneasy about working for the new galactic authority. Consequently, the Riflemen went back to Turcan III, the site of their most significant battle, and resumed their activities as a hired mercenary group.