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The Second Fleet is a numbered expeditionary fleet of the UNSC Navy. Following the Fall of Reach, the Second Fleet and all other surviving naval assets of the United Nations Space Command were recalled back to the Sol system and consolidated into a single command grouping under the Home Fleet in preparation for the inevitable Battle for Earth, effective September 5, 2552. Fleet Admiral Joseph Harper of the Fifth Fleet was given primary administrative and tasking authority for all naval assets in the Sol system, as authorized by UNSC High Command and the UEG Security Council, though the Second Fleet and its fellow fleets retained control over their battle groups. By November 3, 2552, in conjunction with the Seventh and Sixteenth Fleets, the Second Fleet engaged in major skirmishes with Covenant vessels in Earth's orbit.
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