[1] A Bolognese army under Giovanni Bentivoglio opposed Gian Galeazzo Visconti, Duke of Milan.

The city of Bologna was aided by the Republic of Florence that supplied 5,000 cavalry (Rose Brigade) commanded by Bernardo della Serra.

[3] The Bolognese-Florentines appeared to have gained the advantage from this skirmish, so Bentivolgio ordered Bernardo's forces into the fray.

[3] A few days later, after much discussion, the Milanese force marched in tight, orderly formation towards the Bolognese-Florentine camp.

[3] Caught completely by surprise, the Bolognese-Florentine army retreated leaving their camp in the hands of the Milanese.