On Horsemanship is the English title usually given to Περὶ ἱππικῆς, peri hippikēs, one of the two treatises on horsemanship by the Athenian historian and soldier Xenophon (c. 430–354 BC). Other common titles for this work are De equis alendis and The Art of Horsemanship. The other work by Xenophon on horsemanship is Ἱππαρχικὸς, hipparchikos, usually known as Hipparchicus, or The cavalry commander. The title De re equestri may refer to either of the two. On horsemanship deals with the selection, care and training of horses in general. Military training and the duties of the cavalry commander are dealt with in the Hipparchicus. Source: Wikipedia (en)