The 'EAS Lexington' while under the command of Lieutenant Commander John J. Many of the cruisers in the Earth - Minbari War were utilized to combat the Minbari fleet, but they were hopelessly outmached by the Minbari capital ships. Because at that time the technology was not mature enough for rotating sections to create artificial gravity. As the Alpha Class 2226 went into service they were the most powerful ship in the Earth's fleet. Two particle laser to port and starboard as well as some turrets with pulse cannons and a powerful double-plasma gun to the upper part of the bow.

Heavy Cruiser variants have an impressive range of new weapons at their disposal. All variants of the Alpha class can open their own jump point.

The ship receives its driving power of ion drives, which are housed in the last segment of the vessel. The power supply is controlled by fusion reactors. The latest version of the Alpha class is the Midwinter modification (2247), which, used as the first heavy cruisers particle laser technology, which was acquired from the Narn. The Hyperion variant (2244) was equipped for a complete overhaul of the structure of the Alpha class with many new systems (e.g. The Roosevelt variant (2237) was the first heavy cruiser was equipped with hangars for Starfuries. In the 35 years in which the heavy cruiser were used emerged three variants: Roosevelt, Hyperion and Midwinter. Modern heavy cruisers are more than one kilometer long, an armament of several big guns and a small number of Starfury fighters. Although the Omega and Nova destroyers form the core of the Earth Alliance fleet, the comparatively old Alpha class still plays a major role in the Earth Alliance fleet.

Babylon 5 shadow ship