Gerulata was a Roman military camp near Bratislava, Slovakia, which was found in the Roman province of Pannonia. It was part of the Roman frontier defense system of the 2nd century but was abandoned two centuries later when the Romans withdrew from Pannonia.   (Roman military outpost of Gerulata)   https://spectator.sme.sk/c/22807426/ancient-diploma-found-by-archaeologists-in-bratislava.html   A previous thread on the legions of Pannonia: