Macedonian horse-soldiers who also fought on foot when occasion required.
Their armour was heavier than that of the ordinary horse-soldiers, and
lighter than that of the regular heavy-armed foot. A servant accompanied
each soldier in order to take care of his horse when he alighted to fight on
foot. This species of troops is said to have been first introduced by
Alexander the Great (Pollux, 1.132; Curt. 5.13
). They appear also among the Celtiberians