 However, the defeat at Sellasia in 222 BC and the attendant great loss in manpower led to reliance on mercenaries, who were the basis of power for Machanidas and Nabis, his successors.The great losses affected Philip V of Macedon greatly, especially after his defeat at the Battle of Cynoscephalae in 197 BC.With such a small population, and such drastic losses in battle, the Antigonid king had to think radically as to how to improve his state's performance in the next war.