Sapor's son had been made prisoner in the course of the day; in their desperation the legionaries turned their fury against this innocent youth; they beat him with whips, wounded him with the points of their weapons, and finally rushed upon him and killed him with a hundred blows.
The battle of Singara, though thus disastrous to the Romans, had not any great effect in determining the course or issue of the war.

Sapor did not take advantage of his victory to attack the rest of the Roman forces in Mesopotamia, or even to attempt the siege of any large town.

Perhaps he had really suffered large losses in the earlier part of the day; perhaps he was too much affected by the miserable death of his son to care, till time had dulled the edge of his grief, for military glory.
At any rate, we hear of his undertaking no further enterprise till the second year after the battle, A.D.350, when he made his third and most desperate attempt to capture Nisibis.
The rise of a civil war in the West, and the departure of Constantius for Europe with the flower of his troops early in the year no doubt encouraged the Persian monarch to make one more effort against the place which had twice repulsed him with ignominy.

He collected a numerous native army, and strengthened it by the addition of a body of Indian allies, who brought a large troop of elephants into the field.

With this force he crossed the Tigris in the early summer, and, after taking several fortified posts, march northwards and invested Nisibis.