[1] This is what happened in the mid-winter of the consulship of Valentinian and Valens. ¹ But when the highest magistracy passed to Gratianus, ² who was as yet a private citizen, and to Dagalaifus, after the beginning of spring Valens called forth his troops and joining with him Lupicinus and a strong force of auxiliaries, he hastened to Pessinus, ³ formerly a town of Phrygia, now of Galatia.

[2] Having safely garrisoned this place in order to suffer no surprise in those parts, he marched along the foot of the lofty mountain called Olympus, ⁴ and over rocky paths, towards Lycia, planning to attack Gomoarius, while he loitered there half asleep, ⁵

[3] But he was met with general and obstinate resistance, for this reason in particular—that his enemy (as has been mentioned) both on the march and when they were almost in battle array, carried about with him in a litter the little daughter ⁶ of Constantius, and her mother Faustina; and thereby had inflamed the passions of the soldiers to fight more bravely in defence of the imperial stock, with which he claimed that he himself was connected. Just so once the Macedonians, when on the point of engaging with the Illyrians, placed their king, who was still an infant, in his cradle behind the battle line, and from fear that he might be taken prisoner, beat down their adversaries with greater valour. ⁷

[4] Against this crafty device the emperor aided his wavering cause by a clever expedient; for he urged the ex-consul Arbitio, who had long been in retirement, to come to him, in order that respect due to one of Constantine’s generals might calm the savage spirits of the rebels; and so it turned out.

[5] For Arbitio, who was older than the rest and of higher rank, showing to many who were inclined to rebellion his venerable gray hair, called Procopius a public brigand, while he pleaded with the soldiers who had followed the usurper’s delusion as with his children and comrades in his former labours; and he begged them rather to obey him, as a parent who was known for his successful campaigns, than a profligate wretch who was already on the point of being deserted and was approaching his fall.

[6] Gomoarius, on learning of this, might have eluded the enemy and returned safely whence he had come; but since the emperor’s camp was conveniently near, he went over to it under pretext of being a prisoner, pretending that he had been surrounded by a throng of the enemy who had suddenly appeared.

[7] Fired with eagerness at this, Valens marched on to Phrygia, and the two sides had already joined battle near Nacolia, when Agilo at the critical point in the contest turned traitor by suddenly going over to the enemy; then many others followed him who were already brandishing their pikes and swords, and deserted to the emperor with their standards and with their shields reversed, which is the most evident sign of defection.

[8] By this sight, unexpected by all, Procopius was bereft of every aid to safety; so he took to flight and sought a hiding-place in the surrounding woods and mountains, followed by Florentius and the tribune Barchalba, who from the time of Constantius had gained fame in the fiercest wars, and had been led to treason by necessity, not by inclination.

[9] The greater part of the night had passed. The moon, brightly shining from its evening rise until dawn, increased the fear of Procopius; and since on all sides the opportunity for escape was cut off and he was completely at a loss, he began, as is usual in extreme necessity, to rail at Fortune as cruel and oppressive; and so, overwhelmed as he was by many anxieties, he was suddenly tightly bound by his companions and at daybreak was taken to the camp and handed over to the emperor, silent and terror- stricken. He was at once beheaded, and so put an end to the rising storm of civil strife and war. His fate was like that of Perpenna ⁸ of old, who after killing Sertorius at table, for a short time was in possession of the rule, but was dragged from the thickets where he had hidden himself, brought before Pompey, and by his order put to death.

[10] In the same heat of resentment Florentius and Barchalba, who had brought Procopius in, were at once put to death without consideration of reason. For if they had betrayed a legitimate prince, even Justice herself would declare that they were justly executed; but if he whom they betrayed was a rebel and a disturber of the public peace, as he was said to be, they ought to have been given great rewards for a noteworthy deed.

[11] Procopius departed this life at the age of forty years and ten months. Personally he was a tall man and not bad looking; he was somewhat dark complexioned, and walked with his gaze always fixed on the ground. In his secretive and gloomy nature he was like that Crassus ⁹ who, as Lucilius and Cicero declare, laughed only once in his life; but the surprising thing is, that throughout all his life he was not stained with bloodshed.