Battle of Orelious IX
The Battle of Orelious IX was a battle that took place on the planet Orelious IX between the Promellians and Menthars.

Despite the fact that neither side expected a large battle, it was the last and decisive one between the two species and lead to their mutual extinction during the 14th century. It also resulted in the planet's destruction.

The  underwent a mission from the  in 2366 to chart the battle. Remnants of a Menthar booby trap temporarily held it inside the asteroid field. ()

de:Schlacht von Orelious IX
ja:オレリアス9号星の戦い
nl:Slag om Orelious IX
Orelious IX, Battle of