Complex sentence: He was credited with another on April 10, a third on April 12, a fourth on April 22 and his fifth and sixth on May 20, making Jabara the first American jet ace in history.
Split into simpler sentences: He was credited with another on April 10, a third on April 12, and a fourth on April 22. His fifth and sixth kills occurred on May 20, making Jabara the first American jet ace in history.