The Battle of Leuctra was a battle fought on 6 July 371 BC between the Boeotians led by the Thebans, and the Spartans along with their allies amidst the post–Corinthian War conflict. The battle took place in the vicinity of Leuctra, a village in Boeotia in the territory of Thespiae. The Theban victory shattered Sparta's immense influence over the Greek peninsula, which Sparta had gained with its victory in the Peloponnesian War a generation earlier.

Source - https://en.wikipedia.org/wiki/Battle_...
Game - Rome 2: Total War

00:00 Introduction
02:24 Thebes March out
03:02 Spartan Supply area
03:52 The Battle begins
05:13 Cavalry Engagement
06:33 Theban left attacks
07:58 Theban right attacks
09:38 Spartans are pushed back
10:46 Aftermath