Ajagbo was Alaafin of Oyo who ruled the longest. The length of his reign contrasted sharply with most of his close successors. Ajagbo’s love for martial planning led him to create a special office, the Aare Ona Kakanfo, to be occupied by the most accomplished soldier in the empire. He made his friend from Iwoye, Kokoro Gan-Gan, the first. Ajagbo’s knowledge of warfare is remarkable and he was able to enjoy a peaceful reign, having established the supremacy of Oyo military over those of the potential opponents.