Changes

'''Fleet Based''' refers to [[Space Marine]] chapters not based on a [[homeworld]]. They are naturally among the most mobile chapters. They possess only a fleet, one of the fleet ships usually serving as the [[Fortress Monastery]]. They are naturally among the most mobile chapters. Some fleet-based Chapters are also called '''Crusade Chapters'''. Many chapters who rebelled at some point but were granted forgiveness are fleet based crusade chapters because they were forced to forfeit their homeworld.