Second Ark Conflict

"When a lone, once-forgotten UNSC ship found its way to an ancient and besieged Forerunner installation, new enemies emerged from the periphery to exploit the darkness and turmoil that Cortana had created."

- Curator on the battle

In 2559, a large battle broke out on the surface of Installation 00 between the forces of the Banished, a Covenant splinter faction, and the crew of the.

List of appearances

 * Know Your Enemy
 * Halo Mythos: A Guide to the Story of Halo
 * Halo Wars 2