Complex sentence: Year 338 BC was a year of the pre-Julian Roman calendar.In the Roman Empire it was known as the Year of the Consulship of Camillus and Maenius (or, less frequently, year 416 "Ab urbe condita").
Split into simpler sentences: Year 338 BC was a year of the pre-Julian Roman calendar. At the time, it was known as the Year of the Consulship of Camillus and Maenius (or, less frequently, year 416 "Ab urbe condita").