In
281 the Greek city of
Tarentum, in
southern Italy, fell out with Rome and was faced with a Roman attack and certain defeat. Rome had already made itself into a major power, and was poised to subdue all the Greek cities in
Magna Graecia. The Tarentines asked Pyrrhus to lead their war against the Romans.
Pyrrhus was encouraged to aid the Tarentines by the oracle of
Delphi. His goals were not, however, selfless. He recognized the possibility of carving out an empire for himself in Italy. He made an alliance with
Ptolemy Ceraunus, King of Macedon and his most powerful neighbor, and arrived in
Italy in 280 BC.
He entered Italy with an army consisting of 3,000
cavalry, 2,000
archers, 500
slingers, 20,000
infantry and 19
war elephants in a bid to subdue the Romans.
Due to his superior cavalry and his elephants he defeated the Romans, led by
consul Publius Valerius Laevinus, in the
Battle of Heraclea in
280 BC. There are conflicting sources about casualties.
Hieronymus of Cardia reports the Romans lost about 7,000 while Pyrrhus lost 3,000 soldiers, including many of his best. Dionysius gives a bloodier view of 15,000 Roman dead and 13,000 Greek. Several tribes including the
Lucani, Bruttii, Messapians, and the Greek cities of
Croton and
Locri joined Pyrrhus. He then offered the Romans a peace treaty which was eventually rejected. Pyrrhus spent winter in
Campania.
When Pyrrhus invaded
Apulia (
279 BC), the two armies met in the
Battle of Asculum where Pyrrhus won a very costly victory. The consul
Publius Decius Mus was the Roman commander, and his able force, though defeated, broke the back of Pyrrhus' Hellenistic army, and guaranteed the security of the city itself. The battle foreshadowed later Roman victories over more numerous and well armed successor state military forces and inspired the term "
Pyrrhic victory", meaning a victory which comes at a crippling cost. At the end, the Romans had lost 6,000 men and Pyrrhus 3,500 but, while battered, his army was still a force to be reckoned with.