Note 71 — THE AUXILIA DURING THE FIRST TWO CENTURIES A.D.
Reading edition
Such regulations would be covered by the general statement of Suetonius, Vit. Aug. 49 ‘Quidquid autem ubique militum esset, ad certam stipendiorum praemiorumque formulam adstrinxit, definitis pro gradu cuiusque et temporibus militiae et commodis missionum’. The number of the diplomata seems to tell decisively against the suggestion that they were only issued to troops who had distinguished themselves by exceptional conduct in the field.