Thebes was carried by assault. Alexander did not wait for the slow operations of a siege. He watched a favorable opportunity, and burst over and through the outer line of fortifications which defended the city. The attempt to do this was very desperate, and the loss of life great; but it was triumphantly successful. The Thebans were driven back toward the inner wall, and began to crowd in, through the gates, into the city, in terrible confusion. The Macedonians were close upon them, and pursuers and pursued, struggling together, and trampling upon and killing each other as they went, flowed in, like a boiling and raging torrent which nothing could resist, through the open arch-way.
It was impossible to close the gates. The whole Macedonian force were soon in full possession of the now defenseless houses, and for many hours screams, and wailings, and cries of horror and despair testified to the awful atrocity of the crimes attendant on the sacking of a city. At length the soldiery were restrained. Order was restored. The army retired to the posts assigned them, and Alexander began to deliberate what he should do with the conquered town.
He determined to destroy it--to offer, once for all, a terrible example of the consequences of rebellion against him. The case was not one, he considered, of the ordinary conquest of a _foe_. The states of Greece--Thebes with the rest--had once solemnly conferred upon him the authority against which the Thebans had now rebelled. They were _traitors_, therefore, in his judgment, not mere enemies, and he determined that the penalty should be utter destruction.
But, in carrying this terrible decision into effect, he acted in a manner so deliberate, discriminating, and cautious, as to diminish very much the irritation and resentment which it would otherwise have caused, and to give it its full moral effect as a measure, not of angry resentment, but of calm and deliberate retribution--just and proper, according to the ideas of the time. In the first place, he released all the priests. Then, in respect to the rest of the population, he discriminated carefully between those who had favored the rebellion and those who had been true to their allegiance to him. The latter were allowed to depart in safety. And if, in the case of any family, it could be shown that one individual had been on the Macedonian side, the single instance of fidelity outweighed the treason of the other members, and the whole family was saved.