This chapter re-constructs the form and function of the ephēbeia in Hellenistic Megara, beginning with an examination of the city’s military catalogues during its membership in the Boiotian League. Through comparison with other member cities, a detailed reconstruction of the Megarian ephēbeia is advanced beginning with the period stretching from 224-193 BC, and then expanding to consider the potential origins of the city’s ephebic program in its local context. Throughout, the place of the ephēbeia in the local discourse environment of Megara is emphasized for its role in training subsequent generations of Megarian citizens who would go on to participate actively in the city’s military and political life.