Titus Livius (Livy), The History of Rome, Book 40
William A. McDevitte, Sen. Class. Mod. Ex. Schol. A.B.T.C.D., Ed.

33. The wounded were then conveyed into the town of [p. 1889]Aebura, and the legions marched through Carpetania, against Contrebia. [2] The garrison there, on being invested, sent for succours to the Celtiberians; but these were long in coming, not because they were unwilling to give assistance, but that after they had begun their march the roads were rendered impassable, and the rivers swelled by continued rains, so that their countrymen, despairing of assistance, capitulated. [3] Flaccus also, being compelled by the same severe weather, brought his whole army into the city. [4] The Celtiberians, who were on their march, having heard nothing of the capitulation, when the rains abated at last, passed the rivers, and came to Contrebia. When they saw no camp before the town, supposing either that it was removed to the other side, or that the enemy had retired, they came up towards the walls in careless disorder. [5] The Romans made a sally against them from two gates, and attacking them in confusion completely routed them. [6] The same circumstance that disabled them from standing their ground and maintaining a fight, — their not having come in one body, or in a regular disposition, round their standards, —proved favourable to many in making their escape: for they scattered themselves widely over the whole plain, so that the Romans could no where enclose any considerable body of them. [7] However, there were about twelve thousand killed, and more than five thousand taken, with four hundred horses, and sixty-two military standards. [8] The stragglers, flying homewards, turned back another body of Celtiberians, whom they met on the road, by informing them of the surrender of Contrebia, and their own defeat; whereupon they all immediately dispersed, and made the best of their way to their several villages and forts. [9] Flaccus, leaving Contrebia, led his legions through Celtiberia ravaging the country; he stormed many forts until at length the greatest part of the Celtiberians surrendered.