Expeditionary Strike Group 1
Active:	circa 2558
Affiliation:	Unified Earth Government
Branch:	UNSC Navy
Engagements:	Post-Covenant War conflicts Created conflict
Commanders:	Captain Andrew Del Rio (formerly) Captain Thomas Lasky

Expeditionary Strike Group 1 (ESG-1) is a forward-deployed naval presence of the UNSC Navy currently centered around its flagship, UNSC Infinity. ESG-1 has conducted operations against Jul 'Mdama's Covenant in-support of Unified Earth Government and Swords of Sanghelios objectives pursuant to the Treaty of 2552. The strike group is currently engaging in active combat operations countering the emerging Created and their Guardian-Promethean forces.

Composition

Current (10/2558)

• UNSC Infinity (INF-101) — Flagship; CAPT Thomas Lasky
  • Infinity Spartan Forces — CDR Sarah Palmer

Previous

2/2558

• UNSC Infinity (INF-101) — Flagship; CAPT Thomas Lasky
  • Infinity Spartan Forces — CDR Sarah Palmer
  • Infinity Science — Dr. Henry Glassman
  • Infinity carrier air wing
  • Embarked Marine forces
  • Embarked reinforced frigate squadron
    • 10 Strident-class heavy frigates
      • Infinity Sub-Vessel 3
• Battleship division
  • 3 Vindication-class light battleships
• Reinforced cruiser squadron
  • 10 Autumn-class heavy cruisers
    • UNSC Song of the East

List of appearances

• Halo 4
  • Spartan Ops (First appearance)
• Halo: Escalation
• Halo 5: Guardians
• Halo: Official Spartan Field Manual