Research and scholarly literature distinguish between the older fort site Vetera I (13/12 BCE[1] to 70 CE) and the younger fort site Vetera II (71 to at least the 3rd century). These sites were located approximately one Roman mile (mille passus = just under 1500 m) apart. Vetera was one of the most significant garrisons on the northern flank of the Roman Empire. In its early days, it was an essential deployment base for the Romans' expansion efforts on the right bank of the Rhine. Vetera I is currently situated on undeveloped land in the urban area of Xanten, while Vetera II is located up to ten metres below the surface of a quarry pond.[2][3]
^As Tacitus reported that Vetera was built by Augustus, who was in Gaul from 16 BCE to 13 BCE, there has been a tendency to date the earliest camp to this period. However, the finds, especially the pottery stamps and terra sigillata types found, point to the time of the beginning of the Germanic offensive or shortly before. According to Michael Gechter: "Die Anfänge des Niedergermanischen Limes". In Bonner Jahrbücher. 179, 1979, pp. 106-110.
^Böcking, Werner (2005). "Bagger und Taucher entdecken Vetera II". Die Römer am Niederrhein: Geschichte und Ausgrabungen (in German) (5. Aufl ed.). Essen: Klartext. pp. 147–159. ISBN978-3-89861-427-6.
^Schmitz, Dirk (2008). "Das Lager Vetera II und seine Legionen". In Müller, Martin; Schalles, Hans-Joachim; Zieling, Norbert (eds.). Colonia Ulpia Traiana: Xanten und sein Umland in römischer Zeit. Geschichte der Stadt Xanten (in German). Mayence: Verlag Philipp von Zabern. pp. 141–170. ISBN978-3-8053-3953-7.