Complex sentence: Her father was a graduate of the Princeton University Class of 1944, a veteran United States Army Air Forces C-47 pilot, who established a career in advertising and marketing in New York.
Split into simpler sentences: Her father was a graduate of the Princeton University in the Class of 1944 and a veteran of the United States Army Air Force as a C-47 pilot. After leaving the Air Force, he established a career in advertising and marketing in New York.