heavy cavalry engaging heavy cavalry

[Urselius]

Force equals mass times acceleration, as far as we know this pertained in the Ancient period just as it does now. The basic behaviour and physical performance of horses is also much the same now as it was then.

Therefore all references to cavalry actions involving shock using arme blanche weapons - distinct from those involving or dictated by the use of firearms - are relevant to a greater of lesser degree to similar actions of Antiquity.