Galba (1.1-1.2)

Iphicrates the Athenian used to think that the mercenary soldier might well be fond of wealth and fond of pleasure, in order that his quest for the means to gratify his desires might lead him to fight with greater recklessness; but most people think that a body of soldiers, just like a natural body in full vigour, ought to have no initiative of its own, but should follow that of its commander.

Wherefore Paulus Aemilius, as we are told, finding that the army which he had taken over in Macedonia was infected with loquacity and meddlesomeness, as though they were all generals, gave out word that each man was to have his hand ready and his sword sharp, but that he himself would look out for the rest.[*]