The Pillar of Autumn

Were you looking for:
 * UNSC Pillar of Autumn, the Halcyon-class Cruiser commanded by Captain Keyes.
 * The Pillar of Autumn (music), a music track of Halo: Reach Original Soundtrack.
 * The Pillar of Autumn (Halo: Combat Evolved level), the first level of Halo: Combat Evolved.
 * The Pillar of Autumn (Halo: Reach level), the tenth level of Halo: Reach.