🔵 ON THE ROMAN ARMY

“After electing the Consuls they proceed to elect military tribunes,—fourteen from those who had five years', and ten from those who had ten years', service. All citizens must serve ten years in the cavalry or twenty years in the infantry before the forty-sixth year of their age, except those rated below four hundred asses. The latter are employed in the navy; but if any great public necessity arises they are obliged to serve as infantry also for twenty campaigns: and no one can hold an office in the state until he has completed ten years of military service.”

Polybius, histories