A French force heavily defeats a much larger Neapolitan and Spanish army at the battle of Seminara, leading to the creation of the Tercios by Gonzalo de Córdoba.

The Battle of Seminara, part of the First Italian War, was fought in Calabria on 28 June 1495 between a French garrison in recently conquered Southern Italy and the allied forces of Spain and Naples which were attempting to reconquer these territories. Against the redoubtable combination of gendarmes and Swiss mercenary pikemen in the French force, the allies had only Neapolitan troops of indifferent quality and a small corps of lightly armed Spanish soldiers, accustomed to fighting the Moors of Spain. The result was a rout, and much of the fighting centered on delaying actions to permit the fleeing allied force to escape.

A tercio, Spanish for "[a] third") was a military unit of the Spanish Army during the reign of the Catholic Monarchs of Spain and Habsburg Spain in the early modern period. They were the elite military units of the Spanish monarchy and essential pieces of the powerful land forces of the Spanish Empire, sometimes also fighting along with the navy.

Gonzalo Fernández de Córdoba was a Spanish general and statesman. He led military campaigns during the Conquest of Granada and the Italian Wars, after which he served as Viceroy of Naples. For his extensive political and military success, he was made Duke of Santángelo (1497), Terranova (1502), Andría, Montalto and Sessa (1507), and earned the nickname El Gran Capitán.

June 28 is the 179th day of the year in the Gregorian calendar; 186 days remain until the end of the year.