The Wealth of Nations_ Books 4-5 - Adam Smith [190]
The standing army which Annibal left behind him in Spain had the like superiority over the militia which the Romans sent to oppose it, and in a few years, under the command of his brother, the younger Asdrubal, expelled them almost entirely from that country.
Annibal was ill supplied from home. The Roman militia, being continually in the field, became in the progress of the war a well-disciplined and well-exercised standing army, and the superiority of Annibal grew every day less and less. Asdrubal judged it necessary to lead the whole, or almost the whole of the standing army which he commanded in Spain, to the assistance of his brother in Italy. In this march he is said to have been misled by his guides, and in a country which he did not know, was surprised and attacked by another standing army, in every respect equal or superior to his own, and was entirely defeated.
When Asdrubal had left Spain, the great Scipio found nothing to oppose him but a militia inferior to his own. He conquered and subdued that militia, and, in the course of the war, his own militia necessarily became a well-disciplined and well-exercised standing army. That standing army was afterwards carried to Africa, where it found nothing but a militia to oppose it. In order to defend Carthage it became necessary to recall the standing army of Annibal. The disheartened and frequently defeated African militia joined it, and, at the battle of Zama, composed the greater part of the troops of Annibal. The event of that day determined the fate of the two rival republics.
From the end of the second Carthaginian war till the fall of the Roman republic, the armies of Rome were in every respect standing armies. The standing army of Macedon made some resistance to their arms. In the height of their grandeur it cost them two great wars, and three great battles, to subdue that little kingdom, of which the conquest would probably have been still more difficult had it not been for the cowardice of its last king. The militias of all the civilised nations of the ancient world, of Greece, of Syria, and of Egypt, made but a feeble resistance to the standing armies of Rome. The militias of some barbarous nations defended themselves much better. The Scythian or Tartar militia, which Mithridates drew from the countries north of the Euxine and Caspian seas, were the most formidable enemies whom the Romans had to encounter after the second Carthaginian war. The Parthian and German militias, too, were always respectable, and upon several occasions gained very considerable advantages over the Roman armies. In general, however, and when the Roman armies were well commanded, they appear to have been very much superior; and if the Romans did not pursue the final conquest either of Parthia or Germany, it was probably because they judged that it was not worth while to add those two barbarous countries to an empire which was already too large. The ancient Parthians appear to have been a nation of Scythian or Tartar extraction, and to have always retained a good deal of the manners of their ancestors. The ancient Germans were, like the Scythians or Tartars, a nation of wandering shepherds, who went to war under the same chiefs whom they were accustomed to follow in peace. Their militia was exactly of the same kind with that of the Scythians or Tartars, from whom, too, they were probably descended.
Many different causes contributed to relax the discipline of the Roman armies. Its extreme severity was, perhaps, one of those causes. In the days of their grandeur, when no enemy appeared capable of opposing them, their heavy armour was laid aside as unnecessarily burdensome, their laborious exercises were neglected as unnecessarily toilsome. Under the Roman emperors,