Pyrrhus, after the campaign of 280 B.C., spent the winter in Tarentum, whence in the spring of the following year he made an advance into Apulia and captured a number of towns. Shortly, however, he found his path blocked by a substantial Roman force stationed on the territory of the obscure town of Ausculum. Obscure though this town might be, it was of strategic importance. Two roads crossed there—the Via Aurelia Aeclanensis (leading from Aeclanum to Herdoniae) and the Via Herculia (leading from Aequum Tuticum to Venusia). It is still possible to describe the town as controlling one of the three southern entrances into Apulia.
It has been suggested that Pyrrhus' object in this Apulian invasion was to capture Venusia, the recently founded, prodigiously strong Latin colony. To the present writer, this seems most improbable. The venture would have taken a good deal of time and effort, and it would certainly have cost many lives which Pyrrhus could spare but ill. This is especially true if the town was by then provided with a wall, as Beloch thinks. It seems more probable that Pyrrhus had another plan in mind. In the preceding year he had advanced into Latium, at least as far as Anagnia, and possibly even as far as Praeneste, his purpose being, not to besiege Rome, but to try to provoke by his presence a general defection of Rome's allies in that region. Unfortunately for Pyrrhus, those Latian allies were bound too tightly to Rome, and no movement followed.