The arrowhead is a bronze replica of an Indian arrowhead 1/4 inch (.64cm) high. It denotes participation in a combat parachute jump, helicopter assault landing, combat glider landing, or amphibious assault landing, while assigned or attached as a member of an organized force carrying out an assigned tactical mission. A soldier must actually exit the aircraft or watercraft to receive assault credit. Individual assault credit is tied directly to the combat assault credit decision for the unit to which the soldier is attached or assigned at the time of the assault. Should a unit be denied assault, no assault credit will accrue to the individual soldiers of the unit. It is worn on the service and suspension ribbons of the Asiatic-Pacific Campaign, European-Africa-Middle Eastern Campaign, Korean Service Medal, Vietnam Service Medal and Armed Force Expeditionary Medal. Only one arrowhead will be worn on any ribbon.