Editing Second Sons (section)

===Great Crusade===

Reunited with his legion, they took to him as quickly as they were able to. Long had they felt like outcasts among their brothers. Their tactics and choice of arms had never made them popular, but the Primarch saw them for what they could accomplish. Teaching them to go even farther in the name of victory, and augmenting their already potent armories.

Later in the Crusades a curious and deeply disquieting ailment began to appear in some of the more senior Second Sons, and even the Executor himself. Rather than developing the acute radiation sickness and cancers that most of the marines had begun to show from their use of Rad weapons and chemical arms, these souls instead began to feel attracted to radiation. A light glow could be seen around them in the dark, and when deprived of exposure for too long they would become unwell. Some of the most afflicted began to disable the safety features on their weapons and armor, allowing them to be directly bathed in the glow. Some began to become emaciated as well, losing their physical vigor but maintaining mental aptitude. Soon it became clear that many of these marines would actually die if they were not being exposed at all times. A special unit was created for these unfortunate souls, and terminator armor was modified to accommodate their needs. Fallout would be directed back into the suits from their Irrad cleansers, and they would be supplemented with their unshielded fusion generators. Despite the debilitation, these marines were able to wield the most potent and unrestrained weapons on the battlefield, and their suits of armor became walking radioactive bombs