Battle Group Leviathan (Earth-5875)

Battle Group Leviathan was a formation of the UNSC Navy's Epsilon Eridani Fleet, under the command of Vice Admiral Michael Stanforth.

History
Battle Group Leviathan's biggest engagement was the Battle of Sigma Octanus IV in July 2552. The battle saw more than twenty ships of the formation lost to the Covenant, and the few that survived sustained heavy damage. Following the end of the battle, most of the formation was coordinated to defend Reach while the rest stood in position for a Covenant attack.

During the Fall of Reach, Battle Group Leviathan was mostly destroyed by the Covenant, with the very few surviving ships being relocated to Earth, assembling with the UNSC Home Fleet to defend the planet from the Covenant's invasion.