Following the loss of the Panacea to the Dark Eldar, many Orders Hospitallier were created, The Order of the Cleansing Dawn was one such order, Created to root and destroy disease in all its form and to refine new cures against the maladies of the human body brought about from without and within.

While the majority of it's sister orders were kept away from the warfront to research medicine, the Order of the Cleansing Dawn was not so fortunate. Instead it was deployed repeatedly and often at first against Tyranid splinter fleets, helping to mop up the beasts and refine their anti-venoms and ability to cure wounds caused by their biophages and poisons, helping destroy the beasts before they could take root again.

After the Tyranid threat was brought to heel, at least locally, they were brought against the Great Enemy, to fight against a warband spreading plague and bioweapons in the great enemy's name. Here did the Order suffer, and suffer greatly. For servants of Nurgle are not so easily stymied, and took the sisters' presence as an affront. Thus did a fragment of the Death Guard and other Nurglite aligned chaos factiosn attack with great ferocity and fervor the Sisters and the populace they sought to safeguard. The plagues of chaos not caring for the sciences of the body and indeed more often than not using the knowledge to only make it worse, the sisters fell back onto the only things they could, Fire and Faith. They chanted Hymns to the Great and Might Emperor as they purged their enemy with fire and fervor. Even then it was barely enough to turn the tide, as the Previous Cannoness fell to the befouled blade of a Chaos Champion making the Imperials lose heart. Yet, as the Champion of the Ruinous powers laughed and mocked his enemies, Celestian Veritova took her fallen leader's Meltagun and jammed it into the remnant of a man, she fired it until it ran hot and the Champion was not but ash. Soon afterwards the servants of the ruinous powers lost heart and fled, and all that was left was the mop up.

In the fires of the dead and ravaged world a new Canoness was raised from the ranks, the very same woman who had avenged the order previous and only Canoness, Luciana Veritova.  With her ascension in rank came orders from her Prioress, that she would take her order to Koronam, and make a bastion that would hold against any and all enemies of Mankind, by the Emperor's will.

Bonuses: +10 to all rolls healing troops after a battle against Chaos and Tyranids
+5 to all rolls fighting against Chaos and Tyranids