Rangers might come from backgrounds similar to those of barbarians, fighters or druids. Like barbarians, they are often found in the wild places of the world (although many make their homes in more urban environments as well). Like fighters, many rangers served in the Last War (usually as scouts) and have either retired or switched to adventuring careers. Like druids, some rangers patrol the wilds of the Eldeen Reaches, punishing poachers and protecting the creatures that live there. These Eldeen rangers are very similar in outlook to the members of the druid sects, placing a greater emphasis on martial training than on spiritual discipline.
Ranger Options: The new feats and prestige classes in this book offer some interesting choices for ranger characters.
Feats: Beast Totem, Totem Companion, Urban Tracking.
Prestige Classes: Eldeen ranger, extreme explorer, weretouched master.
Animal Companions: See the Animal Companions section.
Source: Eberron Campaign Setting (Page 41)