Los Salamandras fueron la XVIII Legión de Marines Espaciales que el Emperador creó para su Gran Cruzada. Su Primarca es Vulkan, y su hogar, el mundo volcánico de Nocturne. Durante la Herejía de Horus, combatieron de parte del Imperio, pero resultaron destrozados casi por completo en la Masacre del Desembarco de Istvaan V. Aunque actualmente siguen siendo una fuerza pequeña en comparación con otros Capítulos, siguen representando el ideal de Marine Espacial.
The Salamanders were the XVIII Legion of the Space Marine Legion created by the Emperor of Mankind. Their Primarch was Vulkan. The legion remained loyal during the Horus Heresy, but were severely mauled in the first great opening battle, limiting the role they could play in the remainder of the war. Their primarch is never recorded as perishing, and in fact is believed simply to be missing; the search for him and his presumed great purpose is a defining trait of the Salamanders. Other aspects of the legion of Vulkan are their great hardiness as warriors and their equally strong constitutions, willpower and devotion to humanity. In some ways, they can be considered the ideal of what it means to be a Space Marine.