Their levies were drawn from all the different provinces; though from some, where the character of the people was particularly hardy, more than from others.53 It seems probable that every Peruvian, who had reached a certain age, might be called to bear arms. But the rotation of military service, and the regular drills, which took place twice or thrice in a month, of the inhabitants of every village, raised the soldiers generally above the rank of a raw militia. The Peruvian army, at first inconsiderable, came, with the increase of population, in the latter days of the empire, to be very large, so that their monarchs could bring into the field, as contemporaries assure us, a force amounting to two hundred thousand men. They showed the same skill and respect for order in their military organization, as in other things. The troops were divided into bodies corresponding with our battalions and companies, led by officers, that rose, in regular gradation, from the lowest subaltern to the Inca noble, who was intrusted with the general command.54 Their arms consisted of the usual weapons employed by nations, whether civilized or uncivilized, before the invention of powder,--bows and arrows, lances, darts, a short kind of sword, a battle-axe or partisan, and slings, with which they were very expert. Their spears and arrows were tipped with copper, or, more commonly, with bone, and the weapons of the Inca lords were frequently mounted with gold or silver. Their heads were protected by casques made either of wood or of the skins of wild animals, and sometimes richly decorated with metal and with precious stones, surmounted by the brilliant plumage of the tropical birds. These, of course, were the ornaments only of the higher orders. The great mass of the soldiery were dressed in the peculiar costume of their provinces, and their heads were wreathed with a sort of turban or roll of different- colored cloths, that produced a gay and animating effect. Their defensive armor consisted of a shield or buckler, and a close tunic of quilted cotton, in the same manner as with the Mexicans. Each company had its particular banner, and the imperial standard, high above all, displayed the glittering device and the rainbow,--the armorial ensign of the Incas, intimating their claims as children of the skies.55