When Pope Julius II had driven the Bentivogli from Bologna, after erecting a citadel in that town, he caused the people to be cruelly oppressed by his governor; whereupon, the people rebelled, and he forthwith lost the citadel; so that his citadel, and the oppressions to which it led, were of less service to him than different behaviour on his part had been. When Niccolò da Castello, the ancestor of the Vitelli, returned to his country out of exile, he straightway pulled down the two fortresses built there by Pope Sixtus IV, perceiving that it was not by fortresses, but by the goodwill of the people, that he could be maintained in his government.
But the most recent, and in all respects most noteworthy instance, and that which best demonstrates the futility of building, and the advantage of destroying fortresses, is what happened only the other day in Genoa. Everyone knows how, in , Genoa rose in rebellion against Louis XII of France, who came in person and with all his forces to recover it; and after recovering it built there a citadel stronger than any before known, being, both from its position and from every other circumstance, most inaccessible to attack. For standing on the extremity of a hill, named by the Genoese Codefa, which juts out into the sea, it commanded the whole harbour and the greater part of the town. But, afterwards, in the year , when the French were driven out of Italy, the Genoese, in spite of this citadel, again rebelled, and Ottaviano Fregoso assuming the government, after the greatest efforts, continued over a period of sixteen months, at last succeeded in reducing the citadel by famine. By all it was believed that he would retain it as a rock of refuge in case of any reverse of fortune, and by some he was advised to do so; but he, being a truly wise ruler, and knowing well that it is by the attachment of their subjects and not by the strength of their fortifications that princes are maintained in their governments, dismantled this citadel; and founding his authority, not upon material defences, but on his own valour and prudence, kept and still keeps it. And whereas, formerly, a force of a thousand foot-soldiers could effect a change in the government of Genoa, the enemies of Ottaviano have assailed him with ten thousand, without being able to harm him.
Here, then, we see that, while to dismantle this fortress occasioned Ottaviano no loss, its construction gave the French king no sort of advantage. For when he could come into Italy with an army, he could recover Genoa, though he had no citadel there; but when he could not come with an army, it was not in his power to hold the city by means of the citadel. Moreover it was costly for the king to build, and shameful for him to lose this fortress; while for Ottaviano it was glorious to take, and advantageous to destroy it.
Let us turn now to those republics which build fortresses not within their own territories, but in towns whereof they have taken possession. And if the above example of France and Genoa suffice not to show the futility of this course, that of Florence and Pisa ought, I think, to be conclusive. For in erecting fortresses to hold Pisa, the Florentines failed to perceive that a city which had always been openly hostile to them, which had lived in freedom, and which could cloak rebellion under the name of liberty, must, if it were to be retained at all, be retained by those methods which were used by the Romans, and either be made a companion or be destroyed. Of how little service these Pisan fortresses were, was seen on the coming of Charles VIII of France into Italy, to whom, whether through the treachery of their defenders or from fear of worse evils, they were at once delivered up; whereas, had there been no fortresses in Pisa, the Florentines would not have looked to them as the means whereby the town was to be held; the king could not by their assistance have taken the town from the Florentines; and the methods whereby it had previously been preserved might, in all likelihood, have continued sufficient to preserve it; and, at any rate, had served that end no worse than the fortresses.
These, then, are the conclusions to which I come, namely, that fortresses built to hold your own country under are hurtful, and that those built to retain acquired territories are useless; and I am content to rely on the example of the Romans, who in the towns they sought to hold by the strong hand, rather pulled down fortresses than built them. And if any, to controvert these views of mine, were to cite the case of Tarentum in ancient times, or of Brescia in recent, as towns which when they rebelled were recovered by means of their citadels; I answer, that for the recovery of Tarentum, Fabius Maximus was sent at the end of a year with an army strong enough to retake it even had there been no fortress there; and that although he availed himself of the fortress for the recovery of the town, he might, without it, have resorted to other means which would have brought about the same result. Nor do I see of what service a citadel can be said to be, when to recover the city you must employ a consular army under a Fabius Maximus. But that the Romans would, in any case, have recovered Tarentum, is plain from what happened at Capua, where there was no citadel, and which they retook, simply by the valour of their soldiers.
Again, as regards Brescia, I say that the
