Xenophon Hellenica 4.2.5

[5] Accordingly they made preparations to follow with him. As for Agesilaus, he left behind him in Asia Euxenus as governor, and with him a garrison of not less than four thousand men, so that he could keep the cities safe; and seeing that most of his own soldiers were more desirous of remaining than of undertaking a campaign against Greeks, in the desire to lead with him the best men and as many as possible he offered prizes to the cities, for the one which should send the best force, and to the captains of the mercenaries, for the one who should join the expedition with the best equipped company of hoplites, of bowmen, and of peltasts. He likewise announced to the commanders of cavalry that he would also give a prize of victory to the one who should furnish the best mounted and best equipped battalion.