the tribe of the Triballi formerly especially powerful in that quarter had succumbed, and who had played a principal part in the Celtic expeditions to Delphi, were about this time the leading nation along the Lower Save as far as the Morava in the modern Bosnia and Servia.  They roamed far and wide towards Moesia, Thrace, and Macedonia, and fearful tales were told of their savage valour and cruel customs.  Their chief place of arms was the strong Segestica or Siscia at the point where the Kulpa falls into the Save.  The peoples who were at that time settled in Hungary, Transylvania, Roumania, and Bulgaria still remained for the present beyond the horizon of the Romans; the latter came into contact only with the Thracians on the eastern frontier of Macedonia in the Rhodope mountains.

Conflicts on the Frontier
In the Alps

It would have been no easy task for a government more energetic than was the Roman government of that day to establish an organized and adequate defence of the frontier against these wide domains of barbarism; what was done for this important object under the auspices of the government ment of the restoration, did not come up to even the most moderate requirements.  There seems to have been no want of expeditions against the inhabitants of the Alps:  in 636 there was a triumph over the Stoeni, who were probably settled in the mountains above Verona; in 659 the consul Lucius Crassus caused the Alpine valleys far and wide to De ransacked and the inhabitants to be put to death, and yet he did not succeed in killing enough of them to enable him to celebrate a village triumph and to couple the laurels of the victor with his oratorical fame.  But as the Romans remained satisfied with razzias of this sort which merely exasperated the natives without rendering them harmless, and, apparently, withdrew the troops again after every such inroad, the state of matters in the region beyond the Po remained substantially the same as before.

In Thrace

On the opposite Thracian frontier they appear to have given themselves little concern about their neighbours; except that there is mention made in 651 of conflicts with the Thracians, and in 657 of others with the Maedi in the border mountains between Macedonia and Thrace.

In Illyria

More serious conflicts took place in the Illyrian land, where complaints were constantly made as to the turbulent Dalmatians by their neighbours and those who navigated the Adriatic; and along the wholly exposed northern frontier of Macedonia, which, according to the significant expression of a Roman, extended as far as the Roman swords and spears reached, the conflicts with the barbarians never ceased.  In 619 an expedition was undertaken against the Ardyaei or Vardaei and the Pleraei or Paralii, a Dalmatian tribe on the coast to the north of the mouth of the Narenta, which was incessantly perpetrating outrages on the sea and on the opposite coast:  by order of the Romans