Alpha Legion - Legion Fleet: With a Legion dealing in secrets and deception, no account of the Alpha Legion's fleet can truly be verified as it was customary for instance to change the ships' ident-tags after a given operation and indeed use the same name for different vessels.As the last Legion to effectively join the Great Crusade, the Alpha Legion fleet consisted of newly forged battleships and is believed to have numbered amongst the largest of all the fleets within the Legiones Astartes.The Alpha Legion is known to have possessed the following vessels:Alpha (Gloriana-class Battleship) - Personal flagship of Alpharius during the Great Crusade and Horus Heresy eras. The Alpha was severely damaged in the fighting within the Alaxxes Nebula, while simultaneaously fighting the VIth Legion flagship, the Hrafnkel, and a Ramilies-class Starfort of the Ist Legion identified as the Chimaera.Beta  (Gloriana-class Battleship]])' - The Beta served as the primary flagship of Alpharius and/or Omegon himself and made a journey with the Imperial expedition for a meeting with the Cabal. Once the meeting was concluded, the Beta turned its weapons against the Imperial forces and was supported in this action by its sister ship Alpha. The Beta was later seen under the command of Omegon, who felt the death of his twin Alpharius in the Battle of Pluto while aboard this vessel.Delta (Battleship, Unknown Class) - The Delta was one of several Alpha Legion warships bearing that name, but it was also the largest to carry it. Placed at the vanguard of the Alpha Legion's core of warships in pursuit of the elusive VIth Legion fleet, the Delta came face to face with the Space Wolves' Battleship Ragnarok, whose captain, the Wolf Lord Gunnar Gunnhilt, had chosen to sacrifice his life and that of his ship to buy the VIth Legion more time to flee. Emerging from the twisting corridors of safe space within the Alaxxes Nebula, the Delta delivered a punishing weight of fire at the Ragnarok, intent on making a clean kill. The Ragnarok however made use of unorthodox tactics, and fired its last volley of torpedoes in order to force the Delta to a full-stop before ramming the other ship. The burning Raganarok's mass proved enough to drive the Delta into the highly corrosive clouds of the nebula, where both leviathans were consumed.Gamma Lycurgus (Capital Ship, Unknown Class)Zeta Telios (Capital Ship, Unknown Class)Gamma Mu (Dominus-class Battleship) - The Gamma Mu was one of the well-reputed and massive Dominus-class Battleships that formed much of the core of the XXth Legion's line-ships. The Gamma Mu was destroyed in the Alaxxes Nebula under the concentrated fire of the Space Wolves Battleship Ragnarok.Omicron (Battle Barge) - The Omicron was observed acting in support of Armillus Dynat during the Harrowing of Callista Mundi.Theta (Cruiser, Unknown Class) - The Theta was an Alpha Legion warship that took part in the space battle above Isstvan V during the Drop Site Massacre. It was later destroyed during that battle by the Iron Hands' Strike Cruiser Veritas Ferrum.Sigma-Pythonus (Basileus-class Battle Barge) - The lead vessel of the Alpha Leigon fleet that attacked Paramar V during the First Battle of Paramar in the opening days of the Horus Heresy.Anarchy's Heart (Despoiler-class Battleship) - The Anarchy's Heart was the personal battleship of the Chaos Lord Arkos the Faithless and his Renegade Chaos Space Marine warband, The Faithless. Arkos utilised the Anarchy's Heart to launch raids from the Eye of Terror across the millennia following the end of the Horus Heresy. This vessel was destroyed near the conclusion of the infamous Siege of Vraks by the Angels of Absolution Chapter's Battle Barge Liberatorii Delictum and the Strike Cruiser Repentant.Anax-Rho (Heavy Assault Cruiser) - Took part in the First Battle of Paramar during the opening days of the Horus Heresy.Lambda (Strike Cruiser)Occam's Razor (Strike Cruiser) - The Occam’s Razor was part of Dynat Mal’s small fleet which had eeked out a living in the regions of the Orpheus Sector. The ship was supposedly destroyed by the Necrons of the Maynark Dynasty which left its broken hull in a valley filled with the bones of the dead on the jungle-world of Apollyon.Phi (Strike Cruiser)Theta Malquiant (Strike Cruiser) - The Theta Maquiant was an isolated cruiser that operated alone and far away from the rest of the Alpha Legion during the opening years of the Horus Heresy. It was the sister-ship, of the Zeta Morgeld. The Theta Maquiant was sacrificed on purpose to allow an Alpha Legion cell led by Alpharius himself to infiltrate the Iron Hands of the Sysipheum.Upsilon (Strike Cruiser)Zeta (Strike Cruiser)Zeta Morgeld (Strike Cruiser) - The Zeta Morgeld was an Alpha Legion Strike Cruiser that operated as a lone hunter during the Horus Heresy and was alledgedly bound to rendezvous with Alpharius himself before it was confronted and vanquished by the Iron Hands-vessel Sisypheum. Stripped of precious parts, crew and ammunition the Zeta Morgeld was bound to be destroyed in a nearby sun but was ultimately used to save the Sysipheum from another attacking Alpha Legion vessel, the Theta Malquiant.Iota Malephelos (Escort, Unknown Class) - The Iota Malephelos was one of the many undermanned Escorts deployed to protect and blunt the Space Wolves' counterattack on the Alpha Legion's capital ships during the fierce fighting in the Alaxxes Nebula. The Iota Malephelos was the designated target of Bjorn the Fell-Handed's squad, which succeeded in capturing the vessel, slaying its captain and turning the warship's guns against its former allies. The Iota Malephelos later the Space Wolves Legion fleet was integrated into it.Keta Rho (Frigate, Unknown Class) - The Keta Rho was destroyed by weapons fire from the Iota Malepheos after its seizure by the Space Wolves during the battle in the Alaxxes Nebula.