Complex sentence: He was discharged in 1947 and enrolled first in Compton College and then the University of Southern California, where in 1950 he received a B.S. degree with majors in traffic engineering and city management.
Split into simpler sentences: He was discharged in 1947 and enrolled in Compton College, and later, the University of Southern California. In 1950 he received a B.S. degree with majors in traffic engineering and city management.