Most Chapter Serfs come into the service of their Chapter by being drawn from the Chapter's homeworld population, being selected as Aspirants of the Chapter but found wanting to become full-fledged Space Marines, or being born into that status as the child of Chapter Serfs. A minority of Chapter Serfs are humans who have been rescued by the Space Marines on the field of battle and allowed to accompany and serve their saviours out of gratitude. A Chapter's fortress-monastery is home to a large population of these hereditary servants and while they occupy a humble position, they are loyal members of the Chapter. The Serfs are inducted into the Chapter cult, and do not begrudge the status they could have obtained if they were once Aspirants, nor their lowly station, as they are always aware t