Käthe Schwarz is a Bavarian nurse from the 1. Königlich Bayerische Division of the German Empire in World War I. She tends to appear cold and aloof, but in reality, she is really focused and caring in her work. She tends to be opposed to war and is quickly startled, but maintains her composure when tending to the injured. She has never engaged in warfare and would normally not get involved in the action. She is straightforward, sarcastic, and rude, but also caring, worrisome, and sympathetic.