He obtained a pyrrhic victory at Pontedera on 11 June 1554, but his army could not receive help from the ships of his brother Leone (who had been killed by an arquebus shot near Castiglione della Pescaia) and he was forced to retreat to Pistoia.
Piero Sraffa | Piero Manzoni | Bernardo Strozzi | Piero della Francesca | Piero de' Medici | Alessandro Del Piero | Piero Scaruffi | Strozzi family | Piero Taruffi | Leone Strozzi | ''The Baptism of Christ'', by Piero della Francesca | Piero Sicoli | Piero Gleijeses | Piero di Puccio | Piero Corti | Piero Angela | Gian Piero Reverberi | Filippo Strozzi the Younger | Strozzi's ''Incrédulo Tomás'' at Museo de Arte de Ponce | San Piero a Sieve | Piero Tosi | Piero Strozzi | Piero Simondo | Piero Piccioni | Piero Niro | Piero Marini | Piero Mariani (musician) | Piero Malvestiti | Piero Lissoni | Piero Folli |
He first served as a soldier in the Italian War of 1551–1559 under the command of famous admiral Andrea Doria, participating among others to the liberation of Porto Ercole, then besieged by Piero Strozzi.