The Battle of Panna was fought between the pirates of Xer and the Kingdom of Cron in the Pre-Republic era, at the planet Panna. When the pirate Xer began rapid expansion of the Kingdom of Argai within the Kingdom of Cron, King of Cron Ferece summoned Xer to Chandaar, the capital of the Kingdom of Cron. Ferece tried to persuade Xer give an oath of fealty, in return for a number of noble titles, and Xer promised to return in a month with a suitable tribute. However, he gathered a sizable fleet at Panna and attacked Ferece's forces. Following the battle, Xer attacked Duinarbulon.