The Bastion Line was a fleet of ships serving the forces of Moff Kentor Sarne during the DarkStryder Campaign. The fleet, along with the Raptor Line, was called to protect Kathol from New Republic forces under Kursk Mal'ia and the Bothan Combat Response Element and fought in the following Battle of Kathol System.

The Bastion Line was commanded during this battle by Captain Brannij, who flew the Bastion, which suffered heavy damage. When the battle turned in favor of the Republic, Brannij realized that Sarne was only interested in saving himself and decided to act out for the safety of his fleet. Once Sarne was defeated, Brannij took the Bastion Line and other remaining starships and fled into hyperspace.

In addition to the fleet's flagship, the Bastion, the Line also contained the following ships.