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Battle of XI Boötis A
Conflict:	Human-Covenant War
Date:	February 13, 2528
Location:	XI Boötis A System
Outcome:	Pyrrhic UNSC victory
Belligerents UNSC Covenant Commanders Admiral Preston Cole Unknown Covenant Fleet Master Strength 70 UNSC Warships 8 Warships Casualties 30 destroyed 8 Warships

The Battle of XI Boötis A was a major battle in the early years of the Human-Covenant War. The UNSC fleet, consisting of seventy ships, engaged eight enemy warships, destroying the enemy force but losing a total of thirty ships in the process. Although the UNSC lost nearly half their ships, it is still considered one of the few human naval victories of the war.

List of appearances

• Halo Wars: Genesis (First appearance)