During the 38th Millennium, the Ecclesiarch Deacis VI decreed that two new Orders Militant of the Adepta Sororitas would be created. One of these, formed on Terra itself within the walls of the Convent Prioris, was the Order of the Sacred Rose. This Order was founded to honour the memory of Saint Arabella the Liberator. One of the earliest missions dispatched by the Sacred Rose was sent at the behest of Deacis himself to Threskeia VI in the Malatoth Sector of the Ultima Segmentum.
The Ecclesiarch's response was to send a full Commandery of the warrior sisters of the Sacred Rose. Ostensibly his goal was to strengthen the defences of the Malatoth Sector, but Deacis true intent was more subtle. He knew that the Order and Chapter would inevitably have to work closely together and believed that as they did so, the fine example of faith and fidelity set by the Sororitas would gradually influence the Emperor's Blade and bring them back more fully under the aegis of the Ministorum.
Threskeia VI is a temperate world of wide oceans and craggy mountains, deep forests and fertile river valleys. It was the final planet reconquered by the Malatoth Crusade in the 34th Millennium. In honour of this victory, the Ecclesiarchy claimed the world as their own, constructing on the site of the last great battle a colossal shrine praising the Emperor for his beneficence. At the very heart of this vast building, in an ancient stasis field, is a fragment of scroll that had been carried by the Crusade from Terra itself. It contains writing believed to be penned by the Emperor's own hand and it is from this incalculably holy relic that the Order of the Sacred Scroll takes its name, officially being declared a Lesser Order in it's own right late in the 39th Millennium. The Order's Convent-fortress is built as an adjunct to the great shrine itself and also connects to a massive, circular curtain wall built by the Sisterhood to defend the holy site.
While this imposing edifice is the greatest of the Ministorum's shrines, over the millennia grateful pilgrims have built countless other churches and temples across Threskeia's surface. The largest of these have become administrative centres as well as places for worship, populated and ruled by the Emperor's faithful devotees. Other, smaller shrines minister to the needs of the planet's widespread agricultural and fishing communities. Whether farmers or fishers, the people are ascetics, living lives of hard physical work, self-denial and piety. The fruits of the labour of these devoted workers provide for the Adeptus Ministorum's needs across dozens of systems.
The space of the Threskeia system is invariably busy with vessels. Aside from the mighty warships of the Emperor's Blade and the bulk haulers that carry Ecclesiarchy supplies away, a constant stream of ships brings countless thousands of Imperial citizens making the pilgrimage to the great shrine every year. The Order of the Sacred Scroll carefully vet these visitors to ensure that no unworthy person enters its hallowed grounds.
The Battle Sisters of the Sacred Scroll share most of the beliefs of their parent Order. Like the Sacred Rose, they consider themselves solely as conduits for the Emperor's divine will. This frees the Order's warriors of any sense of self-aggrandizement or chasing after personal glory. Instead they bear an aura of serenity and grace, a confidence that whatever happens the will of the Emperor will be accomplished.
This attitude gels remarkably well with that of the Emperor's Blade, who similarly view themselves as a tool, a weapon in the hand of the God-Emperor with which he metes out divine justice and vengeance. When the Order first arrived in the Threskeia system, they were deeply suspicious of what they saw as the Chapter's disregard for the Ecclesiarchy's dictates. However, as time passed, they came to see the depth of the Astartes devotion to the Imperial Creed. It quickly became clear that any seeming reticence was not an act of heresy or rebellion, but rather a determination to ensure that such orders were in full harmony with the Church's own doctrines. The Sisters could not in all honesty argue with this cautious approach, indeed if their own original forebears had been equally wary then Vandire's Reign of Blood might have been avoided.
The Order of the Sacred Scroll remains at approximately Commandery size, consisting of around two hundred Battle Sisters. This number obviously fluctuates with combat losses and the arrival of new recruits from the closest Schola Progenum. These warriors are supported by a coterie of other Ecclesiarchal agents, including Sisters of the Orders Hospitaller and Dialogus. The Order also maintains a motor pool of Rhino and Immolator transports, as well as Exorcist battle tanks. Finally, although they are not housed within the Convent-fortress itself, Threskeia VI has many Imperial priests and preachers who are always eager for the opportunity to fight alongside the Order, bringing with them the varied and frightening combat prowess of their personal Battle Conclaves.
Over the last millennia, particularly when losses have been great or Progenum recruits few, the Order has sometimes followed the example of the Emperor's Blade and recruited directly from Threskeia VI itself, as well as the young children of devout pilgrim families. This has led on occasion to the unusual situation of fleshly brothers and sisters serving concurrently in Chapter and Order. This is considered a huge honour to the family involved and the siblings are viewed as destined for great service to the Emperor.
This well organized way of making war, plus the Order's disinterest in gathering glory or battle honours for itself, mean that the Sacred Scroll tend to work well with most other Imperial forces. Unsurprisingly, this is especially true of the devout yet tactically-minded Astartes of the Emperor's Blade. All too often a Mission of several squads will be assigned to act as an auxiliary when one of the Chapter's Battle Companies goes on campaign. It has even been the case that when a smaller but no less vital situation requires the intervention of a kill team, individual troopers selected from Chapter and Order will form a mixed squad, seamlessly blending together and enhancing their overall effectiveness by their differing strengths and skills. Veteran Battle Sisters, who have fought beside the Emperor's Blade in this way more than once, often paint the right arms of their armour black to show their unity with their 'brothers'.
The serenity and grace of the Sacred Scroll is reflected in their war cries. Battle Sisters do not enter battle with challenges or insults, but rather with voices raised harmoniously in choral verses that honour the God-Emperor. It has been especially noted by battlefield observers that when the Order fights alongside the Emperor's Blade Chapter, the combination of the Sororitas' soprano and contraltos with the contrasting deep bass of the Astartes produces a masterpiece of vocal praise as beautiful as that heard in any Cathedrum, inspiring all the loyal servants of the Imperium that hear it.