Confession and prayer are as much a part of a Battle-Sister's existence as Bolter drills and military discipline. Those who fall short of the Sisterhood's rigorous codes are subject to many penitential punishments, but in more serious cases they may even be exiled from their Order. These warriors, known as Sisters Repentia, band together into groups that seek redemption in the fires of battle. They are led to war by an unsparing religious fanatic known as a Mistress of Repentance, who judges each exiled Sister's deeds and occasionally, at battle's end, may declare her sins atoned for. Those rare few who return to the fold of their Order Militant are held in awe by their fellows.