The Second Battle of Onderon was a conflict between the Galactic Republic and the Mandalorian Clans during the Great Sovereign Crusades that came about due to the Mandalorian capture of Onderon and Dxun during the First Battle of Onderon. The battle resulted in the Republic reclaiming the planet. Ussej Padric Bac III and Kalel Esunkit were also able to rescue Isabella Dashin, who had been captured by the Mandalorians on Utapau days earlier.