with enthusiasm the victors in the games of the circus."[24] The frequent custom of recruiting the legions by means of slaves, in the later period of the empire, which was wholly unknown in the days of the Republic, reveals, in the clearest manner, the weakness to which, in respect of military resources, it had arrived, long before the external symptoms of decay were visible in its fortunes. Even in the time of Marcus Aurelius, the legions which were to combat the Quadi and Marcomanni, on the Danube, were recruited from the servile class. Justinian went so far as to declare, by a public edict, every slave free who had served in the army.[25] "At last the army came to be composed entirely," says Finlay, "of the rudest and most ignorant peasants, of _enfranchised slaves, and naturalised barbarians_. This increased the repugnance, already sufficiently great, felt by the better class of citizens to enter the military life. The mercenaries formed the most valued and brilliant portions of the army, and it became the fashion to copy and admire the dress and manners of the barbarian cavalry."[26] All the ancient historians concur in representing this impossibility of finding native soldiers in its central provinces, as the main cause of the overthrow of the empire. And that this, and not the power of the barbarians, was the real cause of the destruction of the empire, is proved by the fact, that whenever they were well directed, the superiority of the legions was as clearly evinced as in the days of Marius or Cæsar. "Whenever the invaders," says Finlay, "met with a steady and well-combined resistance, they were defeated without much difficulty. The victorious reigns of Claudius II., Aurelian, and Probus, prove the immense superiority of the Roman armies when properly commanded; but the custom which was constantly gaining ground, _of recruiting the legions from among the barbarians_, reveals the deplorable state of _depopulation and weakness_ to which three centuries of despotism and bad administration had reduced the empire."[27]