As soon, however, as it came to be known that the Greek emperor had espoused, the cause of his rival, Bahram found himself in difficulties: conspiracy arose in his own court, and had to be suppressed by executions; murmurs were heard in some of the more distant provinces; Armenia openly revolted and declared for Chosroes; and it soon appeared that in places the fidelity of the Persian troops was doubtful.

This was especially the case in Mesopotamia, which would have to bear the brunt of the attack when the Romans advanced.

Bahram therefore thought it necessary, though it was now the depth of winter, to strengthen his hold on the wavering province, and sent out two detachments, under commanders upon whom he could rely, to occupy respectively Anatho and Nisibis, the two strongholds of greatest importance in the suspected region.

Miraduris succeeded in entering and occupying Anatho.

Zadesprates was less fortunate; before he reached the neighborhood of Nisibis, the garrison which held that place had deserted the cause of the usurper and given in its adhesion to Chosroes; and, when he approached to reconnoitre, he was made the victim of a stratagem and killed by an officer named Rosas.