First Lt. Tallas Tomeny was killed and Sgt. Stephen Phelps was injured by Moore County Sheriff's Deputy Randall Butler during a traffic stop near Robbins Saturday afternoon.
Phelps was evacuated to First Health of the Carolinas in Pinehurst where he is listed in fair condition.
Army officials called the incident "an unfortunate case of mistaken identity and a breakdown in communications between the individuals involved." The District Attorney's office issued a statement Monday in Moore County, clearing Butler.
The soldiers were involved in a Special Forces training mission called
which usually includes civilians and local law enforcement.
Both soldiers were riding in a pickup truck and dressed in civilian clothing when Butler pulled them over on a rural road. A civilian was driving the truck.
According to the State Bureau of Investigation, Butler believed his life was in danger because the soldiers reached for a gun and behaved in a suspicious manner.
The deputy killed one soldier and wounded the other when theytried to disarm him. According to officials, the soldiers thought the deputy was taking part in the training exercise.
WRAL Military Consultant General Robert Springer said he expects big changes in protocol.
"I'm certain actions will be taken to prevent this in the future. Clearly, it's a tragic, tragic error," Springer said.
The Moore County Sheriff's Office was told a training exercisewas underway, said Special Operations spokesman MajorGary Kolb. But he said the Army did not coordinate specifically with the sheriff's office about Saturday's training exercises and Butler was likely unaware of it.
Deputy Butler is expected to return to work on Wednesday.
The incident is being investigated by the N.C. State Bureau of Investigation, the Army Criminal Investigation Division, the Moore County Sheriff's Department and the U.S. Army Special Operations Command.
Robin Sage is the 19-dayfinal exam of the Special Forces Qualification Course. It testsskills in survival, tactics and dealing with people, as well asjudgment, decision-making and ethics.
Robin Sage has been conducted in central North Carolina sincethe mid-1950s without incident, according to a release from theArmy's John F. Kennedy Special Warfare Center and School.