In 1419, Uri and Unterwalden bought the Bellinzona stronghold from the Sacco barons, but were unable to defend it adequately. When, in 1422, they rejected the Milanese proposal to buy back the fortified town, their troops stationed in Bellinzona were put to rout by the Visconti army under the command of Francesco Bussone, called Il Carmagnola. An attempt to reconquer the fortified area with the support of other confederates led to the battle at Arbedo, a village 3 km north of Bellinzona. The Count of Carmagnola led the forces of the Duchy of Milan against the Swiss and was victorious.