Ephebos (ἔφηβος) (often in the plural epheboi), also anglicised as ephebe (plural: ephebes) or archaically ephebus (plural: ephebi), is a Greek term for a male adolescent, or for a social status reserved for that age, in Antiquity. Though the word ephebos can simply refer to the adolescent age of young men of training age, its main use is for the members, exclusively from that age group, of an official institution (ephebeia) that saw to building them into citizens, but especially to training them as soldiers, sometimes already sent into the field; the Greek city states (poleis) mainly depended (like the Roman republic) on its militia of citizens for defense. In the time of Aristotle (384–322 BC), Athens engraved the names of the enrolled ephebi on a bronze pillar (formerly on wooden tablets) in front of the council-chamber. After admission to the college, the ephebus took the oath of allegiance (as recorded in histories by Pollux and Stobaeus—but not in Aristotle) in the temple of Aglaurus and was sent to Munichia or Acte as a member of the garrison. At the end of the first year of training the ephebi were reviewed; if their performance was satisfactory, the state provided each with a spear and a shield, which, together with the chlamys (cloak) and petasos (broad-brimmed hat), made up their equipment. In their second year they were transferred to other garrisons in Attica, patrolled the frontiers, and on occasion took an active part in war. During these two years they remained free from taxation, and were generally not allowed to appear in the law courts as plaintiffs or defendants. The ephebi took part in some of the most important Athenian festivals. Thus during the Eleusinian Mysteries they were sent to fetch the sacred objects from Eleusis and to escort the image of Iacchus on the sacred way. They also performed police duty at the meetings of the ecclesia. After the end of the 4th century BC, the institution underwent a radical change. Enrolment ceased to be obligatory, lasted only for a year, and the limit of age was dispensed with.