The Order of the Eternal Flame boasts above average numbers for a Lesser Order Militant, due to its frequent deployments on crusades across the Imperium and the lack of significant Adepta Sororitas presence in the Segmentum Pacificus. They would also frequently fight alongside the world's Imperial Guard regiments, the Ashimar Nova Guard, and both fighting forces would come to respect each other as allies. It was during the crusade that the Order first came into contact the world of Ashimar when Battle Sisters accompanied Gielian missionaries to the newly-compliant world in order to spread the Imperial Creed to its people. The Order of the Eternal Flame would go on to participate in many Imperial campaigns over the subsequent millennia, including the Macharian Crusade in early M41. She would be martyred fighting heretics on the world of Pavilon many years later, and came to be venerated as the Order's patron saint. The request would be granted, and Canoness Sabera Onataris would from then on lead the newly-established Order of the Eternal Flame. The sons of Vulkan then remained to help rebuild the damage done to Gielia, and they made such an impression on the Sisters of the Argent Shroud garrison that with the Cardinal of Gielia, Augustin Richeleur, petitioned the Abbess Sanctorum of the Adepta Sororitas and the Ecclesiarch to transform the garrison into a new Lesser Order Militant. With the help of the Salamanders, the xenos were repulsed, and the holy relics they had stolen were recovered. Though they fought valiantly to defend the world, they were on the verge of defeat until an Imperial task force led by the Salamanders arrived to bring relief to the besieged shrine world. The Sisters of the Argent Shroud carried out their assigned duty with diligence for centuries, until Gielia came under attack by Drukhari raiders in 448.M39, in an event known as the Sacking of Gielia. The Sisters also acted as the bodyguards of the planet's ruling Bishops and Cardinals. These Sisters acted as the guardians of Gielia's sprawling cathedral-cities and holy sites, including the Eternal Flame of Vulkan, a flame which has burned continuously for millennia and according to legend was lit by the Salamanders' Primarch to help the planet's original settlers keep warm. It has been home to an Adepta Sororitas presence since the late 37 th Millennium, when a convent of the Order of the Argent Shroud was established on the planet. The Shrine World of Gielia, located near the border of Segmentum Solar and Segmentum Pacificus, is a cold, inhospitable world, save for a thin band of temperate climate around its equator where virtually all of its population resides.

Order of the flame