Picts now came and went freely into Aquilonia, under safe-conduct, and they returned with more information as to armor-forging and sword-making. More, they entered Aquilonia's mercenary armies, to the unspeakable disgust of the sturdy Bossonians. Aquilonia's kings toyed with the idea of playing the Picts against the Cimmerians, and possibly thus destroying both menaces, but they were too busy with their policies of aggression in the south and east to pay much heed to the vaguely known lands of the west, from which more and more stocky warriors swarmed to take service among the mercenaries. These warriors, their service completed, went back to their wilderness with good ideas of civilized warfare, and that contempt for civilization which arises from familiarity with it. Drums began to beat in the hills, gathering-fires smoked on the heights, and savage sword-makers hammered their steel on a thousand anvils. By intrigues and forays too numerous and devious to enumerate, Gorm became chief of chiefs, the nearest approach to a king the Picts had had in thousands of years. He had waited long; he was past middle age. But now he moved against the frontiers, not in trade, but in war. Arus saw his mistake too late; he had not touched the soul of the pagan, in which lurked the hard fierceness of all the ages. His persuasive eloquence had not caused a ripple in the Pictish conscience. Gorm wore a corselet of silvered mail now, instead of the tiger-skin, but underneath he was unchanged--the everlasting barbarian, unmoved by theology or philosophy, his instincts fixed unerringly on rapine and plunder. The Picts burst on the Bossonian frontiers with fire and sword, not clad in tiger-skins and brandishing copper axes as of yore, but in scale-mail, wielding weapons of keen steel. As for Arus, he was brained by a drunken Pict, while making a last effort to undo the work he had unwittingly done. Gorm was not without gratitude; he caused the skull of the slayer to be set on the top of the priest's cairn. And it is one of the grim ironies of the universe that the stones which covered Arus's body should have been adorned with that last touch of barbarity--above a man to whom violence and blood-vengeance were revolting. But the newer weapons and mail were not enough to break the lines. For years the superior armaments and sturdy courage of the Bossonians held the invaders at bay, aided, when necessary, by imperial Aquilonian troops. During this time the Hyrkanians came and went, and Zamora was added to the empire.