Fall of the Fifth

The Fall of the Fifth is another lamentable and highly suppressed incident in the history of the Dragons Sanguine Space Marine Chapter, that occurred during the middle centuries of the 41st Millennium. Though the exact circumstances are unknown to outsiders, what is known with any certainty by Imperial savants is that something dreadful occurred to the Chapter's 5th Company, which succumbed to some unknown disaster, and eventually resulted in the loss of the majority of a fellow company when they arrived to lend aid to their stricken brethren.

History
After countless battle that rent their numbers ever lower, the 5th Company suddenly and inexplicably, succumbed to the Black Rage. It is still unclear what exactly occurred, but the Chapter's Apothecaries and Chaplains suggest a drastic loss of willpower and exhaustion by the entire Company. This had led to the last sane members to send a message to the other companies for assistance in order to end the pain of the succumbed brothers. Only the 4th Company heard this desperate plea for help. Using warp travel the 4th reached the strike cruiser the 5th once used as a command post. It wasn't long before they would board the vessel only to be attacked by wave after wave of insane brethren. The sheer power of those feral marines was enough to wipe out the majority of the overwhelmed 4th Company, whittling down their forces until there were only five battle-brothers left alive.

In 511.M41, the rest of the Chapter was informed about the incident that had occured between the two companies. They also informed their brothers that a nearby forge world had taken hold of the 5th Company's vessel until the Chapter could send another company to extract it. In the same year, the five remaining survivors of the 4th Company managed to reach the 1st Company, staying with them until the Chapter would reform.