An unmanned aerial vehicle (UAV) ( commonly known as a drone) is an aircraft without a human pilot on board. UAVs are a component of an unmanned aircraft system (UAS); which include a UAV, a ground-based controller, and a system of communications between the two. The flight of UAVs may …

Battlefield medicine, also called field surgery and later combat casualty care, is the treatment of wounded combatants and non-combatants in or near an area of combat. Studies of historical casualty rates have shown that about half of military personnel killed in action died from the loss of blood and that …