During his absence in the provinces of the north-east Persia itself revolted against his authority, and acknowledged for king an impostor, who, undeterred by the fate of Gomates, and relying on the obscurity which still hung over the end of the real Smerdis, assumed his name, and claimed to be the legitimate occupant of the throne.

The Persians at home were either deceived a second time, or were willing to try a change of ruler; but the army of Darius, composed of Persians and Medes, adhered to the banner under which they had so often marched to victory, and enabled Darius, after a struggle of some duration, to re-establish his sway.
The impostor suffered two defeats at the hands of Artabardes, one of Darius's generals, while a force which he had detached to excite rebellion in Arachosia was engaged by the satrap of that province and completely routed.

The so-called Smerdis was himself captured, and suffered the usual penalty of unsuccessful revolt, crucifixion.
Before, however, these results were accomplished--while the fortune of war still hung in the balance--a fresh danger threatened.

Encouraged by the disaffection which appeared to be so general, and which had at length reached the very citadel of the Empire, Babylon revolted for the second time.

A man, named Aracus, an Armenian by descent, but settled in Babylonia, headed the insurrection, and, adopting the practice of personation so usual at the time, assumed the name and style of "Nebuchadnezzar, son of Nabonidus." Less alarmed on this occasion than at the time of the first revolt, the king was content to send a Median general against the new pretender.