Battle Over Installation 00

The Battle Over Installation 00 was the penultimate battle and the climax of the Forefather War.

Background
Despite the Galactic Alliance's newfound ability to counter S'southi Tactics with moderate efficiency, the S'southi continued to hold a severe advantage over the Alliance, and were slowly fighting their way through the Inner Colonies of the UNSC, and were close to victory.

The re-emergence of the ancient ancilla Offensive Bias gave the Alliance a much-needed morale boost, however it did not prove enough to turn the tide, leaving the Galactic Alliance in a desperate state. Formulating a plan with 001 Anguished Deliberation, the monitor of Installation 01, it was decided that the Galactic Alliance would muster all of it's remaining vessels and force the S'southi into a trap.

The Alliance re-activated the Portal to the Ark in Voi and massed their fleets above Installation 00 and fed information to the S'southi. The overconfident and rampant Binding Enlightenment ordered Sark to have all available forces sent to the Ark and to have it - alongside the Alliance's forces, annihilated. Unknown to the Forefathers, the Alliance had prepared a plan that was, in theory, capable of destroying them completely.