Complex sentence: Early in the strip's run, she gave up cigar smoking and beer; she served in the United States Marine Corps for two days, and was discharged for unnecessary roughness (glimpses of her underpants always reveal a USMC label).
Split into simpler sentences: Early in the strip's run, she gave up cigar smoking and beer. She served in the United States Marine Corps for two days and was discharged for unnecessary roughness (glimpses of her underpants reveal a USMC label).