Complex sentence: After being discharged, he returned to Boston College and posted three winning seasons from 1946 to 1948 and a 4--4--1 campaign in 1949, but was fired after a winless season in 1950.
Split into simpler sentences: After being discharged, he returned to Boston College. He posted three winning seasons from 1946 to 1948 and a 4--4--1 campaign in 1949, but was fired after a winless season in 1950.