Commencement of the wars against the Samnites, the Campanians having called the Romans to their assistance against that nation, 343. These wars, carried on with vigorous exertion and various success, lasted, with but short intermissions, till 290. This is the true heroic age of Rome, ennobled by the patriotic valour of Decius Mus, (father and son, both voluntary victims,) Papirius Cursor, Q. Fabius Maximus, etc. The consequences of this struggle were: _a._ The Romans learnt the art of mountain warfare, and thereby for the first time acquired a peculiar system of military tactics; not, however, till they had been, 321, obliged to pass under the _furcas Caudinas_. _b._ Their relations were more firmly established with their neighbours the Latins and Etrurians, by the complete conquest of the former, 340, and by repeated victories over the latter, more especially in 308. _c._ Great national federations having arisen in Italy, particularly during the last period of the Samnite wars, the Romans entered into connection with the more distant nations of the country; with the Lucanians and Apulians, by the first league, 323, with the Umbri, from the year 308; and although the nature of this connection frequently varied, the different nations were perpetually struggling for independence, and were consequently at enmity with Rome. In this period, moreover, commenced the practical illustration of the leading ideas of Rome upon the political relations in which she placed the conquered with regard to herself. 14. After the subjection of the Samnites, Rome, wishing to confirm her dominion in Lower Italy, was thereby, for the first time, entangled in war with a foreign prince; the Tarentines, too feeble to maintain alone their footing against the Romans, called Pyrrhus of Epirus to their assistance. He came, indeed, but not so much to further the views of the Tarentines as to advance his own; but even in victory, he learnt by experience that the Macedonian tactics gave him but a slight preponderance, which the Romans soon transferred to their own side, exhibiting the truth of the principle, that a good civic militia, sooner or later, will always get the upper hand of mercenary troops.