|It has been suggested that [[::NX Nemesis|NX Nemesis]] be merged|
|into this article or section. (Discuss)|
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USS Achilles was laid down on Stardate 237310.3 at the Procyon Fleetyards, launched stardate 237412.21, sponsored by Leticia Apollodorus, daughter of the governor of Greece, with Captain Morghan O'Riley in command.
Due to the Romulan hijacking of USS Prometheus the previous year, Achilles was moved under heavy escort from Procyon to the Utopia Planitia Fleetyards orbiting Sol IV (Mars), where the rest of her systems, including the THETIS AI control system, were installed.
Her combat outfitting complete, Achilles deployed to the front on Stardate 237504.04, construction crews still aboard fitting out some of her systems. Arriving at Starbase 372, Achilles was immediately assigned to the command of Thomas Riker and given a long-range unescorted strike mission, the target being the Ketracel White production facilities in the Pelosa system. Despite heavy resistance from defending Cardassian and Dominion forces, she made a successful single pass on the facility, destroying the complex with its high output quantum torpedo launchers. In addition to the facility, the Achilles destroyed a full wing of fighters and four Dominion attack ships, while crippling at least as many. This was a single-mission ship kill record that stood for the rest of the war.
While extremely successful during the war and finished out shortly afterward, problems between her commanding officers and the THETIS system, however, resulted in the most advanced ship in Starfleet having 5 COs within a year after the war, then being drydocked, unused, at the Utopia Planitia yards for nearly six more.
New threats, in the form of the Romulan Empire, pushed Starfleet Command to find a new commander for Achilles and Fleet Captain Adler Wong-Aquiss was assigned to the ship. After being told that she was being recommissioned, the onboard AI hacked the computers that controlled the moorings at Utopia Planitia and took the ship out for a short trip, leaving her new CO to arrive at the shipyards to find no ship of which to take command. The ship was tracked by long-range sensor arrays making a blazingly fast triangle to Wolf 359, then Procyon, before returning to Mars.
At the request of the Fleet-Captain Wong-Aquiss, Achilles was renamed Nemesis, honoring a long line of ships with that name. The onboard AI was less than thrilled with this name change, but was forced to go along with it nonetheless.
The first mission of the ship was successful, evacuating a colony before the planet tore itself apart from internal seismic pressure. The second mission was to stop a defecting Starfleet Admiral from reaching Romulan space; Nemesis was intercepted and destroyed by 5 Norexean-class Warbirds, though she destroyed two and crippled two additional ships from the Romulan force, reportedly badly enough that at least one of them was scrapped rather than being repaired.
Despite the report of the ship's destruction by her former Commanding Officer, which was corroborated by numerous other members of the crew and Romulan sensor data, an unknown Achilles-class ship has been seen in the Ithassa region in recent months. Gorn sensor data shows the ship's registry as the USS Achilles, but this has not been confirmed by any specific Federation sources.