Ammianus Marcellinus, Rerum Gestarum
John C. Rolfe, Ph.D., Litt.D., Ed.

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Two of Constantius' legions, which at Sirmium had gone over to Julian and been sent by him to Gaul, take possession of Aquileia with the consent of the inhabitants, and close the gates to Julian's army.

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While Julian was thinking of these and like matters and troubled by important and grave affairs, terrifying and unexpected news came to him of the monstrous and daring acts of certain men, which would check his eager advance, unless he could by watchful care repress these also before they came to a head. These shall be set forth briefly.

[2] Two of Constantius' legions, which with one cohort of bowmen he had found at Sirmium, being [p. 141] not yet sure of their loyalty he had sent to Gaul under colour of urgent necessity. These were slow to move, through dread of the long march and of the Germans, our fierce and persistent foes, and were planning a rebellion, aided and abetted by Nigrinus, a native of Mesopotamia and commander of a troop of horsemen. Having arranged the plot by secret conferences and added to its strength by profound silence, on arriving at Aquileia, a well-situated and prosperous city, surrounded by strong walls, with hostile intent they suddenly closed its gates, supported in this revolt by the native population, because of the dread which was even then connected with the name of Constantius. ¹ [3] And having closed the entrances and posted armed men on the towers and bulwarks, they made ready whatever would be helpful in the coming contest, meanwhile living free from care or restraint; and by so daring an act they roused the neighbouring Italians to side with Constantius, whom they thought to be still living.