The emperor of the West, or, to speak more properly, his general Arbogastes, was instructed by the misconduct and misfortune of Maximus, how dangerous it might prove to extend the line of defence against a skilful antagonist, who was free to press, or to suspend, to contract, or to multiply, his various methods of attack. Arbogastes fixed his station on the confines of Italy; the troops of Theodosius were permitted to occupy, without resistance, the provinces of Pannonia, as far as the foot of the Julian Alps; and even the passes of the mountains were negligently, or perhaps artfully, abandoned to the bold invader. He descended from the hills, and beheld, with some astonishment, the formidable camp of the Gauls and Germans, that covered with arms and tents the open country which extends to the walls of Aquileia, and the banks of the Frigidus, or Cold River. This narrow theatre of the war, circumscribed by the Alps and the Adriatic, did not allow much room for the operations of military skill; the spirit of Arbogastes would have disdained a pardon; his guilt extinguished the hope of a negotiation; and Theodosius was impatient to satisfy his glory and revenge, by the chastisement of the assassins of Valentinian. Without weighing the natural and artificial obstacles that opposed his efforts, the emperor of the East immediately attacked the fortifications of his rivals, assigned the post of honorable danger to the Goths, and cherished a secret wish, that the bloody conflict might diminish the pride and numbers of the conquerors. Ten thousand of those auxiliaries, and Bacurius, general of the Iberians, died bravely on the field of battle. But the victory was not purchased by their blood; the Gauls maintained their advantage; and the approach of night protected the disorderly flight, or retreat, of the troops of Theodosius. The emperor retired to the adjacent hills; where he passed a disconsolate night, without sleep, without provisions, and without hopes; except that strong assurance, which, under the most desperate circumstances, the independent mind may derive from the contempt of fortune and of life. The triumph of Eugenius was celebrated by the insolent and dissolute joy of his camp; whilst the active and vigilant Arbogastes secretly detached a considerable body of troops to occupy the passes of the mountains, and to encompass the rear of the Eastern army. The dawn of day discovered to the eyes of Theodosius the extent and the extremity of his danger; but his apprehensions were soon dispelled, by a friendly message from the leaders of those troops who expressed their inclination to desert the standard of the tyrant. The honorable and lucrative rewards, which they stipulated as the price of their perfidy, were granted without hesitation; and as ink and paper could not easily be procured, the emperor subscribed, on his own tablets, the ratification of the treaty. The spirit of his soldiers was revived by this seasonable reenforcement; and they again marched, with confidence, to surprise the camp of a tyrant, whose principal officers appeared to distrust, either the justice or the success of his arms. In the heat of the battle, a violent tempest, such as is often felt among the Alps, suddenly arose from the East. The army of Theodosius was sheltered by their position from the impetuosity of the wind, which blew a cloud of dust in the faces of the enemy, disordered their ranks, wrested their weapons from their hands, and diverted, or repelled, their ineffectual javelins. This accidental advantage was skilfully improved, the violence of the storm was magnified by the superstitious terrors of the Gauls; and they yielded without shame to the invisible powers of heaven, who seemed to militate on the side of the pious emperor. His victory was decisive; and the deaths of his two rivals were distinguished only by the difference of their characters. The rhetorician Eugenius, who had almost acquired the dominion of the world, was reduced to implore the mercy of the conqueror; and the unrelenting soldiers separated his head from his body as he lay prostrate at the feet of Theodosius. Arbogastes, after the loss of a battle, in which he had discharged the duties of a soldier and a general, wandered several days among the mountains. But when he was convinced that his cause was desperate, and his escape impracticable, the intrepid Barbarian imitated the example of the ancient Romans, and turned his sword against his own breast. The fate of the empire was determined in a narrow corner of Italy; and the legitimate successor of the house of Valentinian embraced the archbishop of Milan, and graciously received the submission of the provinces of the West.