Arrian says that 300,000 fell, while a still larger number were taken prisoners.

Other writers make the loss considerably less.

All, however, agree that the army was completely routed and dispersed, that it made no attempt to rally, and gave no further trouble to the conqueror.
The conduct of Darius in this--the crisis of his fate--cannot be approved; but it admits of palliation, and does not compel us to withdraw from him that respectful compassion which we commonly accord to great misfortunes.

After Issus, it was his duty to make at least one more effort against the invader.

To this object he addressed himself with earnestness and diligence.