Res Gestae

After consideration of the difficult situation, five hundred soldiers who were approved by experience as prudent in battle were selected from each legion, to be opposed to obstacles like those of city walls. Their confident spirit was all the greater because the emperor was seen actively engaged in the foremost ranks, and they strove to scale the mountains, expecting that if they should set foot on the higher places, they would at once and without a struggle carry them off, as if they were booty taken in the chase. But the battle, which began towards midday, was even overtaken by the darkness of night.

Both sides indeed suffered severe losses; our men slew many, but not a few of their own number fell, and at the same time the armour of the imperial guard, gleaming with gold