Space Marine Legions - Original Legion Names: The Astartes Legions were for a very long time after their initial creation under the direct command of the Emperor and originally all Space Marine recruits were drawn from Terra itself rather than the later Legion homeworlds of the Primarchs.The Terran Space Marines would always remember these early times before their Primarchs were re-discovered and the Legions initially had overwhelmingly Terran cultural traditions and origins. Later, as the Primarchs were found, the new recruits would have very strong loyalties towards them, and some of the Primarchs would re-name their Legions to accord with their own personalities and cultural sensibilities.The Emperor saw no problems with this development; He believed the loyalty of the Primarchs to Him was unshakable. This reasoning would be proven to be sadly mistaken; for all their seeming physical and mental perfection they were still human beings and prone to all the sins of humanity, including greed, anger and the lust for power, recognition and advancement -- all emotions that left them susceptible to the temptations offered by the Ruinous Powers of Chaos.The first Primarch to be found was Horus, rediscovered on the world of Cthonia. He was the Emperor's favorite, and he and his XVIth Legion, the Luna Wolves, were granted the honour of being renamed the Sons of Horus following Horus' elevation to the rank of Warmaster, and his survival despite the wound that had nearly killed him on the moon of Davin.The Ist Legion was given the name Dark Angels by Lion El'Jonson, and the XIVth Legion, the Dusk Raiders, had their moniker changed to the Death Guard by Mortarion.While its original name is unknown, the highly honorific name "Emperor's Children" was awarded by the Emperor to the IIIrd Legion only after a speech made by their Primarch Fulgrim so impressed the Emperor of Mankind that He granted that coveted moniker to Fulgrim's Legion.The Vth Legion was originally called the Star Hunters before being reunited with their Primarch Jaghatai Khan, who renamed them the White Scars.The IXth Legion was known as the Revenant Legion early in the Great Crusade. This was because of its penchant for taking recruits who were suffering from genetic and environmental diseases and remaking them as healthy Astartes and because its Astartes often took on the identities of senior officers who were slain in battle, using their mutated Omophagea implant to ingest their flesh and gain their memories and skills. To outsiders, it seemed that many of the Astartes of the Revenant Legion kept returning from certain death. When the Primarch Sanguinius was reunited with his Legion, he renamed them the Blood Angels, determined to remake them in his more noble image.The XIIth Legion was originally known as the War Hounds by the Emperor before the Primarch Angron renamed them the World Eaters.The XVIIth Legion, the Imperial Heralds, were renamed the Word Bearers after they were reunited with their highly religious Primarch Lorgar, who tragically intended to bring word of the Emperor's divinity to every world that his Legion brought into Imperial Compliance.The XXth Legion was originally kept a secret from even the other Primarchs and its existence was only runoured as that of the "Ghost Legion." Later, after the Legion began to operate more openly if still covertly some time in either the solar decade immediately preceding the commencement of the Farinatus Extermination or as appearing as an unexpected reinforcing power during the darkest days of the Third Rangdan Xenocides.