Complex sentence: Carl Grubert was a 1934 alumnus of the University of Wisconsin-Madison, and served in the United States Navy during World War II. He worked in advertising in Chicago, Illinois prior to his cartoonist career.
Split into simpler sentences: Carl Grubert was a 1934 alumnus of the University of Wisconsin-Madison. He served in the United States Navy during World War II. He worked in advertising in Chicago, Illinois prior to his cartoonist career.