While many sons of Olympia who sought utopia abandoned it come their fall, there still remain those who hold true to their vision. Standing apart from their Chaos worshiping kin, the Iron Empire fights all who would deny them their vision. Beside them are those they have freed from corrupt Imperial governance and from the grips of Chaos, uniting under a common purpose and goal to survive the unforgiving 41st Millennium. A novel and Codex of the Fourth Legion: Iron Within, Iron Without.