Pannonia superior was under the consular legate, who had formerly administered the single province, and had three legions under his control: Pannonia inferior at first under a praetorian legate with a single legion as garrison, after Marcus Aurelius under a consular legate, still with only one legion.
In the middle of the 5th century Pannonia was ceded to the Huns by Theodosius II., and after the death of Attila successively passed into the hands of the Ostrogoths, Longobards (Lombards), and Avars.
Little is heard of Pannonia until 35 B.C., when its inhabitants, having taken up arms in support of the Dalmatians, were attacked by Augustus, who conquered and occupied Siscia (Sissek).
But the attack was never delivered, for at this moment, in the rear of Tiberius, the whole of Pannonia and Dalmatia burst into a blaze of insurrection.
Valeria and Pannonia prima were under a praeses and a dux; Pannonia secunda under a consularis and a dux; Savia under a dux and, later a corrector.
The Lombards were at that time dwelling in Noricum and Pannonia (archduchy of Austria, Styria and Hungary, west of the Danube).
The elder journeyed into Pannonia to obtain support from Attila; the younger betook himself to the imperial court at Rome.
Some time between the years 102 and 107, which marked the termination of the first and second Dacian wars, Trajan divided the province into Pannonia superior (n civco), the western, and inferior (r) thrw), the eastern portion.
From the remoter provinces, which had acquiesced in his accession, little help was to be expected; but the legions of Dalmatia, Pannonia and Moesia were eager in his cause, the praetorian cohorts were in themselves a formidable force and an efficient fleet gave him the mastery of the Italian seas.
GAIUS MESSIUS QUINTUS TRAJANUS DECIUS (201-251), Roman emperor, the first of the long succession of distinguished men from the Illyrian provinces, was born at Budalia near Sirmium in lower Pannonia in A.D.