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

On April 2559, a large battle broke out on the surface of Installation 00 between the forces of the Banished, a splinter faction that broke away from the Covenant, against the crew of the.

Prelude
After 28 years of drifting in space, the long-lost UNSC Spirit of Fire arrived at Installation 00 without knowledge of what happened after the war.There, they encountered the Banished.

List of appearances

 * Know Your Enemy
 * Halo Mythos
 * Halo Wars 2