Today, an elaborate international legal framework exists whose aim is to guarantee protection of patients and health-care providers from violence in armed conflict or other emergencies. However, violence against patients and health-care providers remains a sad reality in such situations. Still, it is important for those who have an influence over the respect for the law, like State authorities, State armed forces, armed groups or members of communities, as well as for health-care professionals or those who will become health-care professionals themselves to identify who has to follow the law, what the rules describe and when they apply. A better understanding of the law may contribute to better behavior on the ground, if there is general willingness to comply with legal rules. For health-care professionals, the law may be a tool that can be invoked towards authorities, armed forces, armed groups and others for more effective protection. This module should contribute towards these aims by identifying international legal rules relevant to the protection of patients and health-care providers and pointing towards legal and practical challenges in their implementation.