There existed, in the neighborhood of Amida, the elements of a relieving army, under the command of the new prefect of the East, Sabinianus. Had this officer possessed an energetic and enterprising character, he might, without much difficulty, have collected a force of light and active soldiers, which might have hung upon the rear of the Persians, intercepted their convoys, cut off their stragglers, and have even made an occasional dash upon their lines. Such was the course of conduct recommended by Ursicinus, the second in command, whom Sabinianus had recently superseded; but the latter was jealous of his subordinate, and had orders from the Byzantine court to keep him unemployed. He was himself old and rich, alike disinclined to and unfit for military enterprise; he therefore absolutely rejected the advice of Ursicinus, and determined on making no effort. He had positive orders, he said, from the court to keep on the defensive and not endanger his troops by engaging them in hazardous adventures. Amida must protect itself, or at any rate not look to him for succor. Ursicinus chafed terribly, it is said, against this decision, but was forced to submit to it. His messengers conveyed the dispiriting intelligence to the devoted city, which learned thereby that it must rely wholly upon its own exertions. Nothing now remained but to organize sallies on a large scale and attack the besieger’s works. Such attempts were made from time to time with some success; and on one occasion two Gaulish legions, banished to the East for their adherence to the cause of Magnentius, penetrated, by night, into the heart of the besieging camp, and brought the person of the monarch into danger. This peril was, however, escaped; the legions were repulsed with the loss of a sixth of their number; and nothing was gained by the audacious enterprise beyond a truce of three days, during which each side mourned its dead, and sought to repair its losses.