Florentine War of Conquest against Lucca (1429–1430)

Timeline

1. 1429Tuscany · TuscanyFlorentine gonfaloniere Rinaldo degli Albizzi pushed the plan to conquer Lucca, to unify Tuscany and eliminate a commercial rival. With mercenary support, Florentine forces entered Luccan territory and the war quickly escalated.
2. 1430Lucca · TuscanyFlorentine forces besieged the walls of Lucca; the Lucchese held out under leaders such as Paolo Guinigi. Duke Filippo Maria of Milan covertly supported Lucca; Florentine logistics were strained and military costs soared, and the siege dragged on without success.
3. 1430–1431Florence · TuscanyFlorentine forces were forced to lift the siege and withdraw; the disastrous defeat intensified domestic discontent with the Albizzi faction, laying the groundwork for the later rise of the Medici faction. The Republic of Lucca continued to maintain independence until the late 18th century.