Note 754 — Chapter LXXX · FROM THE DEATH OF PELOPIDAS TO THE BATTLE OF MANTINEA.
Reading edition
The remark made by Polybius upon this battle deserves notice. He states that the description given of the battle by Ephorus was extremely incorrect and absurd, arguing great ignorance both of the ground where it was fought and of the possible movements of the armies. He says that Ephorus had displayed the like incompetence also in describing the battle of Leuktra; in which case, however, his narrative was less misleading, because that battle was simple and easily intelligible, involving movements only of one wing of each army. But in regard to the battle of Mantinea (he says), the misdescription of Ephorus was of far more deplorable effect; because that battle exhibited much complication and generalship, which Ephorus did not at all comprehend, as might be seen by any one who measured the ground and studied the movements reported in his narrative (Polybius, xii, 25).
Polybius adds that Theopompus and Timæus were as little to be trusted in the description of land-battles as Ephorus. Whether this remark has special application to the battle of Mantinea, I do not clearly make out. He gives credit however to Ephorus for greater judgment and accuracy, in the description of naval battles.
Unfortunately, Polybius has not given us his own description of this battle of Mantinea. He only says enough to make us feel how imperfectly we know its details. There is too much reason to fear that the account which we now read in Diodorus may be borrowed in large proportion from that very narrative of Ephorus here so much disparaged.