The history of Greece is, in this, as in many other respects, the best commentary on the history of Italy. Five hundred years before the Christian era, the citizens of the republics round the Aegean Sea formed perhaps the finest militia that ever existed. As wealth and refinement advanced, the system underwent a gradual alteration. The Ionian States were the first in which commerce and the arts were cultivated, and the first in which the ancient discipline decayed. Within eighty years after the battle of Plataea, mercenary troops were everywhere plying for battles and sieges. In the time of Demosthenes, it was scarcely possible to persuade or compel the Athenians to enlist for foreign service. The laws of Lycurgus prohibited trade and manufactures. The Spartans, therefore, continued to form a national force long after their neighbours had begun to hire soldiers. But their military spirit declined with their singular institutions. In the second century before Christ, Greece contained only one nation of warriors, the savage highlanders of Aetolia, who were some generations behind their countrymen in civilisation and intelligence. All the causes which produced these effects among the Greeks acted still more strongly on the modern Italians. Instead of a power like Sparta, in its nature warlike, they had amongst them an ecclesiastical state, in its nature pacific. Where there are numerous slaves, every freeman is induced by the strongest motives to familiarise himself with the use of arms. The commonwealths of Italy did not, like those of Greece, swarm with thousands of these household enemies. Lastly, the mode in which military operations were conducted during the prosperous times of Italy was peculiarly unfavourable to the formation of an efficient militia. Men covered with iron from head to foot, armed with ponderous lances, and mounted on horses of the largest breed, were considered as composing the strength of an army. The infantry was regarded as comparatively worthless, and was neglected till it became really so. These tactics maintained their ground for centuries in most parts of Europe. That foot-soldiers could withstand the charge of heavy cavalry was thought utterly impossible, till, towards the close of the fifteenth century, the rude mountaineers of Switzerland dissolved the spell, and astounded the most experienced generals by receiving the dreaded shock on an impenetrable forest of pikes.