# The Historical, Political, and Diplomatic Writings of Niccolo Machiavelli/Volume 2/The Prince/Chapter 13

CHAPTER XIII.
OF AUXILIARIES, AND OF MIXED AND NATIONAL TROOPS.
Auxilliary troops, which are the other kind which I have characterised in the preceding chapter as useless, are such as are furnished by a powerful ally whom a prince calls upon to come with his troops to aid and defend him; as was done quite lately by Pope Julius II., who, having had sad proof of the inefficiency of mercenaries in his attempt upon Ferrara; resorted to auxiliaries, and arranged with Ferdinand of Spain to send his armies to his assistance.
Troops of this kind may be useful and good in themselves, but they are always dangerous for him who calls them to his aid; for if defeated, he remains undone, and if victorious, then he is in their power liké a prisoner. And although I could adduce numerous examples of this from ancient history, yet I will here cite that of Pope Julius II., which is still fresh in our minds, and whose conduct in that respect could not well have been more imprudent than what it was. For, wishing to take Ferrara, he placed himself entirely in the hands of a foreigner. Fortunately for him, however, an incident occurred which saved him from the full effect of his bad selection; for his auxiliaries having been defeated at Ravenna, the Swiss suddenly appeared on the field and put the victors to ignominious flight. And thns Julius II. escaped becoming prisoner either to his enemies who had fled, or to his auxiliaries; for the enemy’s defeat was not due to their assistance, but to that of others. ​The Florentines, having no army of their own, asnd wishing to get possession of Pisa, employed for that purpose ten thousand French troops, and were involved in greater danger by them than they had ever experienced from any other difficulty. The Emperor of Constantinople, by way of resisting the attacks of his neighbors, put ten thousand troops into Greece, who at the termination of the war refused to leave the country again; and this was the beginning of the subjection of Greece to the infidels.
Whoever, then, desires not to be victorious, let him employ auxiliary troops, for they are much more dangerous even than mercenaries. For your ruin is certain with auxiliaries, who are all united in their obedience to another; whilst mercenaries, even after victory, need more time and greater opportunity to injure you, for they are not one homogeneous body, and have been selected by yourself and are in your pay, and their commander being appointed by you, he cannot so quickly gain sufficient influence over these troops to enable him to injure you. In short, with mercenaries the danger lies in their cowardice and bad faith; whilst with auxiliaries their valor constitutes the danger.
A wise prince, therefore, should ever avoid employing either one of them, and should rely exclusively upon his own troops, and should prefer defeat with them rather than victory with the troops of others, with whom no real victory can ever be won. In proof of this, I shall not hesitate again to cite the conduct of Cesar Borgia. This Duke entered the Romagna with auxiliaries, taking there only French troops, with whom he took Imola and Furli. But thinking afterwards that these troops were not reliable, he had recourse to mercenaries, whom he deemed less dangerous, and engaged the Orsini and the Vitelli. These, however, proved themselves by their conduct to be uncertain, faithless, and dangerous; and therefore the Duke destroyed them, and then relied upon his own troops exclusively. The difference between the one and the other of these troops is easily seen when we look at the reputation of the Duke Valentino at the time when he employed the Orsini and the Vitelli, and when he had none but his own troops; for then his credit increased steadily, and the Duke was never more highly esteemed than when every one saw that he was thoroughly master of his armies. ​I did not intend to depart from Italian and recent instances, and yet I cannot leave unnoticed the case of Hiero of Syracuse, being one of those to whom I have referred before. Having been made general of the Syracusan army, as before stated, he quickly perceived that mercenary troops were not useful, their commanders being appointed in a similar manner as our Italian Condottieri. And as it seemed to Hiero that he could neither keep nor dismiss them with safety, he had them all put to death and cut to pieces, and thenceforth carried on the war exclusively with troops of his own.
I will also recall to memory an illustration from the Old Testament applicable to this subject. David having offered to go and fight the Philistine bully, Goliath, Saul, by way of encouraging David, gave him his own arms and armor, which David however declined, after having tried them, saying that he could not make the most of his strength if he used those arms; and therefore he preferred to meet the enemy with no other arms but his sling and his knife. In short, the armor of another never suits you entirely; it is either too large and falls off your back, or weighs you down, or it is too tight.
Charles VII., father of Louis XI., king of France, having by his valor and good fortune delivered France from the English, recognized the necessity of depending solely upon his own armies, and organized in his kingdom regular companies of artillery, cavalry, and infantry. His son, Louis XI., afterwards disbanded the infantry, and began to hire Swiss soldiers in their stead. This error, being followed by others, is now seen to have been the cause of the dangers to which that kingdom was exposed; for by giving prominence to the Swiss, Louis depreciated his own troops, and having disbanded his own infantry entirely, and accustomed his mounted forces to the support of the Swiss, they felt that they could have no success without them. Thence it came that the French could not hold their own against the Swiss, and without their support they could not stand against others. And thus the French armies have remained mixed, that is to say, partly their own troops and partly mercenaries; which, although better than either auxiliaries or mercenaries alone, yet makes them much worse than if they were composed exclusively of their own troops. Let this example suffice; for the kingdom of France would have been invincible if the military system established by ​Charles VII. had been persevered in and extended. But the short-sightedness of men leads them to adopt any measure that for the moment seems good, and which does not openly reveal the poison concealed under it, as I have said above of hectic fevers.
A prince, then, who does not promptly recognize evils as they arise, cannot be called wise; but unfortunately this faculty is given to but few. And if we reflect upon the beginning of the ruin of the Roman Empire, it will be found to have resulted solely from hiring the Goths for its armies; for that was the first cause of the enervation of the forces of the Empire; and the valor of which the Romans divested themselves was thus transferred to the Goths.
I conclude, then, that no prince can ever be secure that has not an army of his own; and he will become wholly dependent upon fortune if in times of adversity he lacks the valor to defend himself. And wise men have ever held the opinion, that nothing is more weak and unstable than the reputation of power when not founded upon forces of the prince’s own; by which I mean armies composed of his own subjects or citizens, or of his own creation ;—all others are either mercenaries or auxiliaries.
The means for organizing such armies of his own will readily be found by the prince by studying the method in which Philip of Macedon, father of Alexander the Great, and many republics and princes, organized their armies, to which I refer in all respects.