Via Aemilia
Because of the uneven and marshy terrain near Forum Gallorum through which the antagonists would have to pass, Mark Antony could not deploy his excellent cavalry forces, but decided to attack by sending "Legiones" II "Gallica" and XXXV into the marshes and deploying his praetorian cohorts and those of Marcus Junius Silanus along the main road (Via Aemilia) over the marshy ground. The legionaries were deployed in the shelter of the reeds of the marshes at the point where the main road was narrowest; cavalry units and light infantry moved forward along the Via Aemilia to harry Pansa's troops and draw them into the trap.