Complex sentence: Anthony Grove Hillerman was born in Sacred Heart, Oklahoma, and was a decorated combat veteran of World War II, having served as a mortarman in the 103rd Infantry Division and having earned the Silver Star, the Bronze Star, and a Purple Heart.
Split into simpler sentences: Anthony Grove Hillerman was born in Sacred Heart, Oklahoma, and was a decorated combat veteran of World War II, having served as a mortarman in the 103rd Infantry Division. He earned the Silver Star, the Bronze Star, and a Purple Heart.