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. In between the Second and Third Macedonian Wars, Philip V embarked on a major reform and re-organization of the kingdom. Expansion could secure 'the great reservoir of available man-power' that lay north in Thrace. Philip then transported segments of the populations of the coastal cities to the northern frontiers and moved those Thracians south. This, combined with economic and political moves, re-built Macedonia and allowed for Perseus, Philip's successor, to be in a stronger position. Perseus had enough grain to last the army ten years (without drawing on harvests), enough money to hire 10,000 mercenaries for ten years, and field an army of 43,000 men, a significant improvement compared to the situation of Philip V at Cynoscephalae in 197 BC, who fielded an army of 25,500 men.