Complex sentence: Ernest Edward Bankey Jr. (August 28,1920--June 15,2009) was an American World War II ace with 9.5 aerial victories and an ace in a day who rose to the rank of colonel in the United States Air Force.
Split into simpler sentences: Ernest Edward Bankey Jr. (August 28,1920--June 15,2009) was an American World War II flying ace credited with 9.5 aerial victories. He was also an ace in a day, and rose to the rank of colonel in the United States Air Force.