Defense of Mars

Template:Battle The Battle of Mare Erythraeum was an engagement of the Human-Covenant War in late 2552 where UNSC Army forces led by Colonel James Ackerson fought the Covenant on Mare Erythraeum on the surface of Mars. It occurred simultaneously with the Covenant's prolonged invasion of Earth and resulted in a Covenant victory. After the UNSC's eventual defeat, the Covenant began to concentrate more of their forces on Earth,^[1] although Ackerson's work in this battle helped buy UNSC ground forces on Earth precious time.^[2] During or after the engagement, Colonel Ackerson was taken prisoner and taken aboard the CCS-class battlecruiser Triumphant Declaration.^[3]

List of appearances

Halo: Uprising (First mentioned)
Halo 5: Guardians
- Limited Edition (Mentioned only)

Sources

^ Halo: Uprising, Issue 3
^ Halo Encyclopedia
^ Halo: Uprising, issue 1

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 • Installation 05 (Engagements) • Mars • Anodyne Spirit • Installation 00 (Engagements) • SUNSPEAR

Unknown date	Alpha Cephei (pre-2541) • 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

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List of appearances

Sources

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