Little is known about the judicial system of ancient Macedonia except that the king acted as the chief judge of the kingdom. The Macedonian kings were also supreme commanders of the military, with early evidence including not only Alexander I's role in the Greco-Persian Wars but also with the city-state of Potidaea accepting Perdiccas II of Macedon as their commander during their rebellion against the Delian League of Athens in 432 BC. In addition to the esteem won by serving as Macedonia's supreme commander, Philip II was also highly regarded for his acts of piety in serving as the high priest of the nation. He performed daily ritual sacrifices and led religious festivals. Alexander imitated various aspects of his father's reign, such as granting land and gifts to loyal aristocratic followers. However, he lost some core support among them for adopting some of the trappings of an Eastern, Persian monarch, a "lord and master" as Carol J. King suggests, instead of a "comrade-in-arms" as was the traditional relationship of Macedonian kings with their companions. Yet it was his father Philip II who had already shown signs of being influenced by the Persian Empire when he adopted similar institutions, such as having a Royal Secretary, royal archive, royal pages, and a throne, although there is some scholarly debate as to the level of Persian influence in Philip's court.