During the last stages of the Mandalorian Wars, the 9th Division's 25th Battalion participated in the retaking of the jungle moon of Dxun. At the height of the New Sith Wars, the 27th Battalion was part of the force of Marines assigned to serve alongside Lord Hoth's Army of Light during the Ruusan Campaign. Along with the rest of the Corps, the division was disbanded as a result of the Ruusan Reformation.