Auxiliaries, which are the other useless arm, are employed when a prince is called in with his forces to aid and defend, as was done by Pope Julius in the most recent times; for he, having, in the enterprise against Ferrara, had poor proof of his mercenaries, turned to auxiliaries, and stipulated with Ferdinand, King of Spain,[1] for his assistance with men and arms. These arms may be useful and good in themselves, but for him who calls them in they are always disadvantageous; for losing, one is undone, and winning, one is their captive. [1] Ferdinand V (F. II of Aragon and Sicily, F. III of Naples), surnamed “The Catholic,” born 1452, died 1516. And although ancient histories may be full of examples, I do not wish to leave this recent one of Pope Julius the Second, the peril of which cannot fail to be perceived; for he, wishing to get Ferrara, threw himself entirely into the hands of the foreigner. But his good fortune brought about a third event, so that he did not reap the fruit of his rash choice; because, having his auxiliaries routed at Ravenna, and the Switzers having risen and driven out the conquerors (against all expectation, both his and others), it so came to pass that he did not become prisoner to his enemies, they having fled, nor to his auxiliaries, he having conquered by other arms than theirs. The Florentines, being entirely without arms, sent ten thousand Frenchmen to take Pisa, whereby they ran more danger than at any other time of their troubles. The Emperor of Constantinople,[2] to oppose his neighbours, sent ten thousand Turks into Greece, who, on the war being finished, were not willing to quit; this was the beginning of the servitude of Greece to the infidels. [2] Joannes Cantacuzenus, born 1300, died 1383. Therefore, let him who has no desire to conquer make use of these arms, for they are much more hazardous than mercenaries, because with them the ruin is ready made; they are all united, all yield obedience to others; but with mercenaries, when they have conquered, more time and better opportunities are needed to injure you; they are not all of one community, they are found and paid by you, and a third party, which you have made their head, is not able all at once to assume enough authority to injure you. In conclusion, in mercenaries dastardy is most dangerous; in auxiliaries, valour. The wise prince, therefore, has always avoided these arms and turned to his own; and has been willing rather to lose with them than to conquer with the others, not deeming that a real victory which is gained with the arms of others.