As they journeyed into Arcadia, the Thebans were joined by armed contingents from many of Sparta's former allies, swelling their forces to some 50–70,000 men.
A medida que viaxaban cara a Arcadia, os tebanos fóronse unindo a distintos continxentes armados procedentes de moitos dos antigos aliados de Esparta, que lles permitiron incrementar as súas forzas até entre 50 e 70.000 homes.