Aquileia (Eugenius' Usurpation).
Fought September 6 and 7, 394, between Theodosius, Emperor of the East, and Eugenius, the usurping Emperor of the West, whose army was commanded by Arbogastes. The first day's fighting went against Theodosius, who was only saved by darkness from a severe reverse, but during the night a force sent by Arbogastes to secure the passes in Theodosius' rear, deserted to his standard, and thus reinforced and aided by a dust storm which blew in the faces of his antagonists and disordered their ranks, he on the following day gained a signal victory.