The parma was used by legionnaires in the early republican period of Rome's history, by the lowest class division of the army— the velites.
It was used mainly by auxiliary infantry and cavalry, with the legionaries preferring the heavier but more protective scutum, during earlier periods.
In Virgil's Aeneid, the parma is cited as a weapon utilised by the Teucrians in defence against the Greeks (Battle of Troy), and later against the Rutulians.
It was also used by the Roman vexilliferi or flag bearers that carried the standard that marked the cohort, as well as by most early auxiliaries.
In the Pyrrhic dance it was raised above the head and struck with a sword so as to emit a loud ringing noise.