Operation: HORIZON

Operation: HORIZON

Conflict:

Date:

Location:

Operation: HORIZON was an operation of the United Nations Space Command sometime between 2531 and 2544. It concerned the destruction of Covenant exploratory fleet elements near Cascade. John-117 was involved in this operation.^[1]

Non-canon and dubious canon appearences[edit]

Silver Timeline[edit]

This article contains information about the Silver Timeline, and is not a part of the established Halo canon.

Blue Team and Green Team participated in Operation: HORIZON.^[2]

List of appearances[edit]

Halo 5: Guardians
- Limited Edition dossiers (First mentioned)

Sources[edit]

^ ^a ^b Halo 5: Guardians Limited Edition, Dossier files - John-117
^ Halo: The Series, Dr. Catherine Halsey's Computer (Retrieved on Mar 25, 2022) [local archive] [external archive]

v • d • e ⇦ Battles of the Human-Covenant War ⇨

2520s	Harvest (I) (Minor Transgression) • Chi Ceti • Alpha Corvi II • Bliss • Harvest (II) • Netherop (I) • SILENT STORM (Seoba • Biko • Etalan • Zhoist) • Circinius IV • Mesra • Netherop (II) • Alpha Aurigae • Galodew • XI Boötis A • Madrigal • Hat Yai • Asmara • Harvest (III)

2530s	Dwarka • Eridanus II • Groombridge-1830 • Arcadia (I) • Etran Harborage • Vodin • Victoria • Jericho VII (I) • Eirene • Charybdis IX • The Rubble • Metisette • Leonis Minoris • New Constantinople • Bonanza asteroid belt • New Harmony • K7-49 • Atlas Moons • Kholo

2540s	Jericho VII (II) • Alluvion • 18 Scorpii • Psi Serpentis • Miridem • Fleet of Glorious Consequence • Heian • Draco III • Actium • Pegasi Delta • Sargasso • Camber • New Llanelli • Skopje • Meridian • Bounty • Ruthersburg • Algolis • Estuary • Mesa • Kroedis II • Arcadia (II) • Paris IV • Iota • Titus

2550s	Minab • Gamma Pavonis VII • Imber • Jastolo • Lenapi • Ursula IV • Cygnus • Erdenet • Ballast • Concord (OFFSET EYE) • Beta Eridani • Ariel • Fumirole • Troy • Criterion • Sigma Octanus IV • Reach (Engagements) • Tribute • Verge • Beta Gabriel • Line Installation 1-4 • New Jerusalem • Mount Haven • Installation 04 (Engagements) • Threshold • Reach raid • Eridanus Secundus • Unyielding Hierophant • Earth (Engagements) • Luna • Onyx • Joyous Exultation • Installation 05 (Engagements) • Mars • Anodyne Spirit • Installation 00 (Engagements) • SUNSPEAR

Unknown date	Alpha Cephei (pre-2541) • Cascade (pre-2544) • HEMORRHAGE (pre-2552) • Odenli'sh (pre-2552) • DIRE MORNING • FANCY DRESS

Overarching campaigns	Outer Colonies (2525-2536) • Inner Colonies (2536-2552)

By victor	UNSC • Covenant

To see the Silver Timeline version of this template, click here.

Contents

Non-canon and dubious canon appearences[edit]

Silver Timeline[edit]

List of appearances[edit]

Sources[edit]

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