Complex sentence: During World War II he was commissioned through Officer Candidate School, and served in the United States Army 322nd Combat Engineer Battalion of the 97th Infantry Division in Europe during World War II where he was wounded twice and was awarded the Bronze and Silver Star medals.
Split into simpler sentences: During World War II he was commissioned through Officer Candidate School, and served in the United States Army 322nd Combat Engineer Battalion of the 97th Infantry Division in Europe. He was wounded twice and was awarded the Bronze and Silver Star medals.