The Great Rim Lines War was a major galactic conflict fought roughly forty years after the Great Territorial War. The war saw the forces of the Third Sith Empire, which had previously been defeated in the Great Territorial War, and the Mandalorian Clans on the offensive against the forces of the Jedi Order and the Galactic Republic. The conflict was fought primarily to acquire trade routes and supplies for the dwindling Sith and Mandalorian militaries.