The Italian tribes, allied to Rome, had supplied twenty thousand infantry; the remaining three thousand were native allies.

The infantry occupied a front of two and a half miles in length; the cavalry extended a mile and a quarter on each flank.

Thus the Roman front of battle was five miles in extent.
Hannibal's force was inferior in strength; his infantry of the line were twenty thousand strong.

He had eight thousand light infantry and ten thousand cavalry.

The Carthaginian formation was much deeper than the Roman, and Hannibal's line of battle was less than two miles long.