What is the official definition of deadly force?

The official definition of deadly force is the use of force that is intended to cause death or that poses a substantial risk of death or serious bodily harm to another person. This definition encapsulates the gravity of the situation in which such force may be deployed, emphasizing that it is a last resort typically justified only under specific circumstances, such as self-defense or the defense of others when faced with an imminent threat.

Understanding this definition is crucial for service members, as it underscores the legal and ethical implications of using deadly force, guiding them to act within the bounds of the law and military rules of engagement. The other options either misrepresent the nature of deadly force or fail to recognize the stringent conditions under which it is appropriately employed.