The First, Second, and Third Samnite wars, between the early Roman Republic and the tribes of Samnium, extended over half a century, involving almost all the states of Italy, and ended in Roman domination of the Samnites. The tribes of Samnium, who held the Apennines to the southeast of Latium, were Rome's most formidable rivals.

extract from WIKIPEDIA

Second (or Great) Samnite War (326 to 304 BC)

• 326 BC - Start of the Second Samnite War.
• 321 BC - Battle of the Caudine Forks.
• 315 BC - Battle of Lautulae.
• 314 BC - Battle of Teracina - Roman victory under Fabius Rulianus.
• 311 BC - Etruscans join the Samnites against Rome.
• 310 BC - Battle of Lake Vadimo between Rome and the Etruscans.
• 308 BC - The war escalates when the Umbrians, Picentini, and Marsians join the war against Rome.
• 306 BC - The Hernici revolt against Rome (Livy ix. 42).
• 305 BC - Battle of Bovianum ends with Samnite defeat and the end of main Samnite resistance.
• 304 BC - Aequi defeated.
• 304 BC - End of the Second Samnite War. Rome establishes many new colonies and gains control over much of central and southern Italy.