+35.+ These measures satisfactorily accomplished while he was in winter quarters, and the security of Libya and Iberia being sufficiently provided for; when the appointed day arrived, Hannibal got his army in motion, which consisted of ninety thousand infantry and about twelve thousand cavalry. After crossing the Iber, he set about subduing the tribes of the Ilurgetes and Bargusii, as well as the Aerenosii and Andosini, as far as the Pyrenees. When he had reduced all this country under his power, and taken certain towns by storm, which he did with unexpected rapidity, though not without severe fighting and serious loss; he left Hanno in chief command of all the district north of the Iber, and with absolute authority over the Burgusii, who were the people that gave him most uneasiness on account of their friendly feeling towards Rome. He then detached from his army ten thousand foot and a thousand horse for the service of Hanno,—to whom also he entrusted the heavy baggage of the troops that were to accompany himself,—and the same number to go to their own land. The object of this last measure was twofold: he thereby left a certain number of well-affected persons behind him; and also held out to the others a hope of returning home, both to those Iberians who were to accompany him on his march, and to those also who for the present were to remain at home, so that there might be a general alacrity to join him if he were ever in want of a reinforcement. He then set his remaining troops in motion unencumbered by heavy baggage, fifty thousand infantry and nine thousand cavalry, and led them through the Pyrenees to the passage of the river Rhone. The army was not so much numerous, as highly efficient, and in an extraordinary state of physical training from their continuous battles with the Iberians. [Sidenote: Geography of Hannibal’s march.] +36.+ But as a knowledge of topography is necessary for the right understanding of my narrative, I must state the places from which Hannibal started, through which he marched, and into which he descended when he arrived in Italy. Nor must I, like some historians, content myself with mentioning the mere names of places and rivers, under the idea that that is quite sufficient to give a clear knowledge. My opinion is that, in the case of well-known places, the mention of names is of great assistance, but that, in the case of unknown countries, names are no better than unintelligible and unmeaning sounds: for the understanding having nothing to go upon, and being unable by referring to something known to translate the words into thought, the narrative becomes confused and vague, and conveys no clear idea. A plan therefore must be discovered, whereby it shall be possible, while speaking of unknown countries, to convey real and intelligible notions.