Cataphract, Clibanarii, whatever, against Infantry

[marka]

There is a famous one in Xenophon- either the Hellenica or his hagiography of Aegesilaios. A Greek foraging party was cut to pieces by Persian cavalry and two scythed chariots. Scythed chariots were used for 300 years by many armies so there must have been something to them. But they are a good example of horses charging ancient spearmen and pikemen.

the skirmish at dasclyeum-i think
the foraging party was rescued by the main body and only suffered about 100 casualties
but the accounts do state that the persians broke up the hurriedly formed phlanx-you are quite correct