The Sisters of St. Cosmas are a highly trained elite medical corps, specialising in battlefield first aid and surgeries on the front lines of the Great War. The Sisters take a modified Hippocratic Oath that compels them to help any wounded soldiers of the Faith, no matter how dire the circumstance, as well as dispatching heretics and other enemies they find on the battlefield without pity or mercy. Armed with a combat surgical knife that doubles as a Misericordia, they are as equally adept at saving lives as taking them from those they find lying wounded in No Man’s Land. They carry medical kits with a plethora of battlefield drugs that are especially useful for nullifying the pain of even the ghastliest wounds, and getting soldiers back on their feet and back into the fray, even if just for a few moments so they can accomplish their mission or die trying.