Julianus, in some passages of Tacitus is called Titius,
in others Tertius,
but Tettius is probably the correct form. (Orelli, ad Tac. Hist.
He was the commander of one of the three legions stationed in Moesia, and along with his fellow-commanders received the consular insignia from Otho, in consequence of a victory which they gained over the Rhoxolani, a Sarmatian tribe. Shortly afterwards, Aponius Saturninus, the governor of Moesia, made an attempt upon the life of Tettius, who escaped across Mount Haemus.
He took no part in the civil war, although the legion, which he commanded, espoused the cause of Vespasian, and pleaded various delays which prevented him from joining his troops. On the triumph of the party of Vespasian, he was, notwithstanding, appointed one of the praetors ; but the senate would not allow him to enter upon the dignity, and conferred his office upon Plotius Griphus, on the 1st of January, A. D. 70. Domitian, however, almost immediately afterwards, restored him to the praetorship. (Tac. Hist. 1.79