John Paul Vann

John Paul Vann was a lieutenant colonel in the United States Army, later retired, who became well known for his role in the Vietnam War. Although separated from the military before the Vietnam War reached its peak, he returned to service as a civilian and by the waning days of the war was the first American civilian to command troops in regular combat there. He received the Presidential Medal of Freedom and was the only civilian in Vietnam to receive the Distinguished Service Cross. He died in a helicopter crash in 1972 at 47 years old.