RT Journal Article SR Electronic T1 Comparison between Defence Healthcare Engagement and humanitarian assistance JF BMJ Military Health JO BMJ Mil Health FD British Medical Journal Publishing Group SP 417 OP 419 DO 10.1136/bmjmilitary-2020-001437 VO 168 IS 6 A1 Thomas Falconer Hall A1 S Horne A1 D Ross YR 2022 UL http://militaryhealth.bmj.com/content/168/6/417.abstract AB Humanitarian assistance and Defence Healthcare Engagement have traditionally both been taught on the Medical Humanitarian Stabilisation Operations Course. However, the two activities are distinct. This paper outlines the critical differences between them, focusing on their specific purposes, scope, timescales and ethics. Humanitarian assistance will remain a distinct activity with a focus on the relief of suffering, guided by international norms, while Defence Healthcare Engagement will encompass a broader range of activities, less constrained by internationally agreed principles. This presents an opportunity for the Defence Medical Services to directly contribute to projecting UK influence, preventing conflict and building stability. However, it requires the Defence Medical Services to take responsibility for the ethical issues that Defence Healthcare Engagement raises. This paper recommends the development of an ethical framework that reconciles the strategic aims of Defence Healthcare Engagement with maximising patient welfare at the tactical level. This is a paper commissioned as a part of the Humanitarian and Disaster Relief Operations special issue of BMJ Military Health.