He was a peasant of the village of Cotignola, who, being invited to quit the mattock for a sword, threw his pickax into an oak, and cried, 'If it stays there, it is a sign that I shall make my fortune.' The ax stuck in the tree, and Sforza went forth to found a line of dukes.[2] After the death of Barbiano in 1409, Sforza and Braccio separated and formed two distinct companies, known as the Sforzeschi and Bracceschi, who carried on between them, sometimes in combination, but usually in opposition, all the wars of Italy for the next twenty years.

These old comrades, who had parted in pursuit of their several advantage, found that they had more to lose than to gain by defeating each other in any bloody or inconveniently decisive engagement.

Therefore they adopted systems of campaigning which should cost them as little as possible, but which enabled them to exhibit a chess-player's capacity for designing clever checkmates.[3] Both Braccio and Sforza died in 1424, and were succeeded respectively by Nicolo Piccinino and Francesco Sforza.

These two men became in their turn the chief champions of Italy.

At the same time other Condottieri rose into notice.