Awarded to members of the Armed Forces of the United States who, while serving under competent authority in any capacity with an Armed Force of the United States after 5 April 1917, has been killed or wounded.
In action against an enemy of the United States.
In action with an opposing armed force of a foreign country in which the Armed Forces of the United States are or have been engaged.
While serving with friendly foreign forces engaged in an armed conflict against an opposing armed force in which the United States is not a belligerent party.
As the result of an act of any such enemy or opposing armed force.
As the result of an act of any hostile foreign force.
As the result of friendly weapon fire while actively engaging the enemy.
As the indirect result of enemy action. (example: injuries resulting from parachuting from a plane brought down by enemy or hostile fire.)
As the result of maltreatment inflicted by their captors while a prisoner of war.
After 28 March 1973, as a result of international terrorist attack against the U.S. or a foreign nation friendly to the U.S.
After 28 March 1973, as a result of military operations while serving outside the territory of the United States as part of a peacekeeping force.