Ursicinus was a senior military officer, holding the rank of "master of cavalry" (magister equitum) in the later Roman Empire c. 349–359. In AD 351 or 352 he was entrusted with the suppression of the Jewish revolt against Caesar Constantius Gallus. Tiberias and Diospolis, two of the cities conquered by the rebels, were almost completely destroyed, while Diocaesarea was razed to the ground. Ursicinus also was ordered to kill several thousand rebels, even young ones. The Roman historian Ammianus Marcellinus revered Ursicinus, and his account is greatly biased in his favour.