Chapter XII: How Many Different Kinds of Soldiers There Are, and of Mercenaries
Having spoken particularly of all the various kinds of Princedom whereof at the outset I proposed to treat, considered in some measure what are the causes of their strength and weakness, and pointed out the methods by which men commonly seek to acquire them, it now remains that I should discourse generally concerning the means for attack and defence of which each of these different kinds of Princedom may make use.
I have already said that a Prince must lay solid foundations, since otherwise he will inevitably be destroyed. Now the main foundations of all States, whether new, old, or mixed, are good laws and good arms. But since you cannot have the former without the latter, and where you have the latter, are likely to have the former, I shall here omit all discussion on the subject of laws, and speak only of arms.
I say then that the arms wherewith a Prince defends his State are either his own subjects, or they are mercenaries, or they are auxiliaries, or they are partly one and partly another. Mercenaries and auxiliaries are at once useless and dangerous, and he who holds his State by means of mercenary troops can never be solidly or securely seated. For such troops are disunited, ambitious, insubordinate, treacherous, insolent among friends, cowardly before foes, and without fear of God or faith with man. Whenever they are attacked defeat follows; so that in peace you are plundered by them, in war by your enemies. And this because they have no tie or motive to keep them in the field beyond their paltry pay, in return for which it would be too much to expect them to give their lives. They are ready enough, therefore, to be your soldiers while you are at peace, but when war is declared they make off and disappear. I ought to have little difficulty in getting this believed, for the present ruin of Italy is due to no other cause than her having for many years trusted to mercenaries, who though heretofore they may have helped the fortunes of some one man, and made a show of strength when matched with one another, have always revealed themselves in their true colours so soon as foreign enemies appeared. Hence it was that Charles of France was suffered to conquer Italy with chalk; and he who said our sins were the cause, said truly, though it was not the sins he meant, but those which I have noticed. And as these were the sins of Princes, they it is who have paid the penalty.
But I desire to demonstrate still more clearly the untoward character of these forces. Captains of mercenaries are either able men or they are not. If they are, you cannot trust them, since they will always seek their own aggrandizement, either by overthrowing you who are their master, or by the overthrow of others contrary to your desire. On the other hand, if your captain be not an able man the chances are you will be ruined. And if it be said that whoever has arms in his hands will act in the same way whether he be a mercenary or no, I answer that when arms have to be employed by a Prince or a Republic, the Prince ought to go in person to take command as captain, the Republic should send one of her citizens, and if he prove incapable should change him, but if he prove capable should by the force of the laws confine him within proper bounds. And we see from experience that both Princes and Republics when they depend on their own arms have the greatest success, whereas from employing mercenaries nothing but loss results. Moreover, a Republic trusting to her own forces, is with greater difficulty than one which relies on foreign arms brought to yield obedience to a single citizen. Rome and Sparta remained for ages armed and free. The Swiss are at once the best armed and the freest people in the world.
Of mercenary arms in ancient times we have an example in the Carthaginians, who at the close of their first war with Rome, were well-nigh ruined by their hired troops, although these were commanded by Carthaginian citizens. So too, when, on the death of Epaminondas, the Thebans made Philip of Macedon captain of their army, after gaining a victory for them, he deprived them of their liberty. The Milanese, in like manner, when Duke Filippo died, took Francesco Sforza into their pay to conduct the war against the Venetians. But he, after defeating the enemy at Caravaggio, combined with them to overthrow the Milanese, his masters. His father too while in the pay of Giovanna, Queen of Naples, suddenly left her without troops, obliging her, in order to save her kingdom, to throw herself into the arms of the King of Aragon.