The Prince by Niccolo Machiavelli Chapter 26 Page 7

should seek to follow the example of those great men who have delivered their country in past ages, it is before all things necessary, as the true foundation of every such attempt, to be provided with national troops, since you can have no braver, truer, or more faithful soldiers; and although every single man of them be good, collectively they will be better, seeing themselves commanded by their own Prince, and honoured and esteemed by him. That you may be able, therefore, to defend yourself against the foreigner with Italian valour, the first step is to provide yourself with an army such as this.

And although the Swiss and the Spanish infantry are each esteemed formidable, there are yet defects in both, by reason of which troops trained on a different system might not merely withstand them, but be certain of defeating