If so, they were probably units similar in nature to the ala and cohors I Britannica (also known as the I Flavia Britannica or Britanniciana, among other titles), which were stationed in Britain in the mid-1st century AD, but removed to Vindobona in Pannonia by the late 80s AD (they would later take part in Trajan's Parthian War of 114–117 AD and Trebonianus Gallus' Persian war of 252 AD). Though the name of the unit was derived from its early service in Britain, the unit was not generally composed of ethnic Britons.Tully, pp. 380. No units of this name are believed to have been active in Britain during the late 2nd century. In an inscription from Sirmium in Pannonia dating to the reign of the emperor Gallienus (CIL 3, 3228), we have mention of vexillations of legions *Brittan(n)icin(arum) ("militum vexill(ationum) legg(ionum) ]G]ermaniciana[r(um)] [e]t Brittan(n)icin(arum)") – another form that is very similar to the *Britan(n)icimiarum from Castus's inscription. Procurator Centenarius of Liburnia Exceptionally talented, experienced and/or connected Praefects Castrorum/Legionis could sometimes move on to higher civilian positions such as Procurator, which Castus indeed managed to accomplish after retiring from the army. He became procurator centenarius (governor) of Liburnia, a part of Roman Dalmatia, today's Croatia. (centenarius indicates that he received a salary of 100,000 sesterces per year). Castus was appointed procurator centenarius of the province of Liburnia with ius gladii, the power to put anyone, even Senators, to death. Nothing further is known of him. Other Artorii are attested in the area, but it is unknown if Lucius Artorius Castus started this branch of the family in Dalmatia, or whether the family had already been settled there prior to his birth (if the latter, Castus might have received the Liburnian procuratorship because he was a native of the region). The date of Lucius Artorius Castus's floruit No dates are given in either inscription, making it difficult to offer a precise date for them, no less Lucius Artorius Castus's floruit. The late French epigraphy expert Xavier Loriot suggested that Lucius Artorius Castus's expedition against the Armenians (as he reads the main inscription) could have taken place in 215 AD, under the reign of emperor Caracalla, or perhaps later, in 232 AD, under the reign of Severus Alexander (when P. Aelius Hammonius led a Cappadocian force in Severus's Persian war). Three Croatian archaeologists examined the inscriptions in 2012, as part of an international