Titus Livius (Livy), The History of Rome, Book 25
D. Spillan, A.M., M.D., Cyrus Evans, Ed.

32. Nothing very memorable had been done in Spain for about two years, the operations of the war consisting more in laying plans than in fighting; but during the same summer in which the events above recorded took place, the Roman generals, quitting their winter quarters, united their forces; [2] then a council was summoned; and the opinions of all accorded, that since their only object hitherto had been to prevent Hasdrubal from pursuing his march into Italy, it was now time that an effort should be made to bring the war in Spain to a termination; [3] and they thought that the twenty thousand Celtiberians, who had been induced to take arms [p. 1003]that winter, formed a sufficient accession to their strength. [4] There were three armies of the enemy. Hasdrubal, son of Gisgo, and Mago, who had united their forces, were about a five days' journey from the Romans. [5] Hasdrubal, son of Ha- milcar, who was the old commander in Spain, was nearer to them: he was with his army near the city Anitorgis. [6] The Roman generals were desirous that he should be overpowered first; and they hoped that they had enough and more than enough strength for the purpose. Their only source of anxiety was, lest the other Hasdrubal and Mago, terrified at his discomfiture, should protract the war by withdrawing into trackless forests and mountains. [7] Thinking it, therefore, the wisest course to divide their forces and embrace the whole Spanish war, they arranged it so that Publius Cornelius should lead two-thirds of the Roman and allied troops against Mago and Hasdrubal, and that Cneius [8??] Cornelius, with the remaining third of the original army, and with the Celtiberians added to them, should carry on the war with the Barcine Hasdrubal. [9] The two generals and their armies, setting out together, preceded by the Celtiberians, pitched their camp near the city Anitorgis, within sight of the enemy, the river only separating them. [10] Here Cneius Scipio, with the forces above mentioned, halted, but Publius Scipio proceeded to the portion of the war assigned to him.