Fate decreed that the Thebans should restore the Mantineans from the villages to their own country after the engagement at Leuctra,1
but when restored they proved far from grateful. They were caught treating with the Lacedaemonians and intriguing for a peace with them privately without reference to the rest of the Arcadian people. So through their fear of the Thebans they openly changed sides and joined the Lacedaemonian confederacy, and when the battle took place at Mantineia
between the Lacedaemonians and the Thebans under Epaminondas,2
the Mantineans joined the ranks of the Lacedaemonians.