He then drew up his troops, posting the hastati in front, the principes behind them, and closing his rear line with the triarii.
33.

He did not draw up his cohorts in close order, but each before their respective standards; placing the companies at some distance from each other, so as to leave a space through which the elephants of the enemy passing might not at all break their ranks.

Laelius, whom he had employed before as lieutenant-general, but this year as quaestor, by special appointment, according to a decree of the senate, he posted with the Italian cavalry in the left wing, Masinissa and the Numidians in the right.

The open spaces between the companies of those in the van he filled with velites, which then formed the Roman light-armed troops, with an injunction, that on the charge of the elephants they should either retire behind the files, which extended in a right line, or, running to the right and left and placing themselves by the side of those in the van, afford a passage by which the elephants might rush in between weapons on both sides.

Hannibal, in order to terrify the enemy, drew up his elephants in front, and he had eighty of them, being more than he had ever had in any battle; behind these his Ligurian and Gallic auxiliaries, with Balearians and Moors intermixed.
In the second line he placed the Carthaginians, Africans, and a legion of Macedonians; then, leaving a moderate interval, he formed a reserve of Italian troops, consisting principally of Bruttians, more of whom had followed him on his departure from Italy by compulsion and necessity than by choice.