Abstract
This chapter introduces to the main topic of the volume, namely the influence of the changing nature of warfare on the provision of medical care and the ethical challenges that occur. It presents the main ideas of relevant concepts such as asymmetrical warfare, hybrid warfare, and complex emergencies before illustrating the ethical challenges that new forms of warfare create for military and humanitarian health care providers. Examples of ethical challenges include embedding medical personnel in combating forces, questions regarding the treatment of detainees, the need to uphold medical neutrality, and pitfalls of using medicine to non-medical ends. The chapter concludes with a synopsis of the volume.