The Atlas Moons, as their name suggests, were the moons of the UEG colony Atlas. During the Human-Covenant war, these moons were the sight of the Siege of the Atlas Moons, where UNSC forces fought the Covenant throughout the territory. After a short battle, the UNSC forces, commanded by Vice Admiral Danforth Whitcomb, won on ground and in space, forcing the Covenant to retreat.