ἱππαρχία

A. office of ἵππαρχος, X. Ath. 1.3 (pl.); of the magister equitum, D.C. Fr. 36.26, Lyd. Mag. 2.13.

II. a squadron of horse such as he commands, Plb. 10.23.4, D.S. 17.57, Str. 17.1.12, Plu. Eum. 7, Arr. An. 1.24.3; consisting of 512 men, Ascl. Tact. 7.11, etc.