UNSC Pillar of Autumn

“There was only one ship.” -Thel'Vadamee.

"One? Are you sure?" -Prophet of Regret.

"Yes, they called it the Pillar of Autumn" -Thel'Vadamee.

UNSC Pillar of Autumn(C-709) was a Halcyon-class Light cruiser in the UNSC Navy. It was informally referred to as the Autumn, and it's name abbreviated to "PoA".