Original: He enlisted in the United States Marine Corps in 1963, and served as a Marine in the Vietnam War, reaching the rank of Corporal. He was seriously injured in 1965 near Da Nang - his right arm shattered and partially paralyzed.
Simplified: He joined in the United States Marine Corps in 1963, and served as a Marine in the Vietnam War, where he was seriously injured in 1965 near Da Nang - his right arm shattered and partially paralyzed.