25. After they had seen all, the spies departed to go back; and when they reported these things, forthwith Cambyses was enraged and proceeded to march his army against the Ethiopians, not having ordered any provision of food nor considered with himself that he was intending to march an army to the furthest extremities of the earth; but as one who is mad and not in his right senses, when he heard the report of the Ichthyophagoi he began the march, ordering those of the Hellenes who were present to remain behind in Egypt, and taking with him his whole land force: and when in the course of his march he had arrived at Thebes, he divided off about fifty thousand of his army, and these he enjoined to make slaves of the Ammonians and to set fire to the seat of the Oracle of Zeus, but he himself with the remainder of his army went on against the Ethiopians. But before the army had passed over the fifth part of the way, all that they had of provisions came to an end completely; and then after the provisions the beasts of burden also were eaten up and came to an end. Now if Cambyses when he perceived this had changed his plan and led his army back, he would have been a wise man in spite of 22 his first mistake; as it was, however, he paid no regard, but went on forward without stopping. The soldiers accordingly, so long as they were able to get anything from the ground, prolonged their lives by eating grass; but when they came to the sand, some did a fearful deed, that is to say, out of each company of ten they selected by lot one of themselves and devoured him: and Cambyses, when he heard it, being alarmed by this eating of one another gave up the expedition against the Ethiopians and set forth to go back again; and he arrived at Thebes having suffered loss of a great number of his army. Then from Thebes he came down to Memphis and allowed the Hellenes to sail away home.