Reason and honour dictated to the Tarentines the propriety of now following up the haughty injunction of their envoys by a declaration of war against Rome; but in Tarentum neither reason nor honour characterized the government, and they had simply been trifling in a very childish fashion with very serious matters.

No declaration of war against Rome took place; in its stead they preferred to support the oligarchical party in the Sicilian towns against Agathocles of Syracuse who had at a former period been in the Tarentine service and had been dismissed in disgrace, and following the example of Sparta, they sent a fleet to the island--a fleet which would have rendered better service in the Campanian seas (440).
Accession of the Etruscans to the Coalition-- Victory at the Vadimonian Lake The peoples of northern and central Italy, who seem to have been roused especially by the establishment of the fortress of Luceria, acted with more energy.

The Etruscans first drew the sword (443), the armistice of 403 having already expired some years before.

The Roman frontier-fortress of Sutrium had to sustain a two years' siege, and in the vehement conflicts which took place under its walls the Romans as a rule were worsted, till the consul of the year 444 Quintus Fabius Rullianus, a leader who had gained experience in the Samnite wars, not only restored the ascendency of the Roman arms in Roman Etruria, but boldly penetrated into the land of the Etruscans proper, which had hitherto from diversity of language and scanty means of communication remained almost unknown to the Romans.

His march through the Ciminian Forest which no Roman army had yet traversed, and his pillaging of a rich region that had long been spared the horrors of war, raised all Etruria in arms.