Military tribune

A military tribune (Latin tribunus militum, "tribune of the soldiers", Greek chiliarchos, χιλίαρχος) was an officer of the Roman army who ranked below the legate and above the centurion. Young men of Equestrian rank often served as military tribune as a stepping stone to the Senate. The tribunus militum should not be confused with the elected political office of tribune of the people (tribunus plebis) nor with that of tribunus militum consulari potestate.

Early Rome

The word tribunus derives from tribus, "tribe." In Rome's earliest history, each of the three tribes (Ramnes, Luceres, and Tities) sent one commander when an army was mustered, since there was no standing army. The tribunes were commanders of the original legion of 3,000. By the time of the Greek historian Polybius (d. 118 BC), the tribunes numbered six, and they were appointed by the consuls. However, the process by which tribunes were chosen and assigned is complex and varies at different times.

Republican period