A tercio was a military administrative 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
Surrender of Breda, by Velázquez, shows Ambrosio Spinola (at right), commander of a Spanish tercio, receiving the keys to the city from a defeated Dutch general in 1625.
Tercios disembarking, 1583
Schematic depiction of the pikemen's combat drill.
The Battle of Pavia, fought on the morning of 24 February 1525, was the decisive engagement of the Italian War of 1521–1526 between the Kingdom of France and the Habsburg Empire of Charles V, Holy Rom
Tercio
…the Macedonian phalanxes and the Roman legions. Such formations distinguished themselves in famous battles such as the Battle of Bicocca (1522) and the Battle of Pavia (1525). Following their formal establishment in 1534, the reputation of the tercio was built upon their effective training and high proportion of "old…
Ruprecht Heller, The Battle of Pavia (1529), Nationalmuseum, Stockholm
The Battle of Pavia, by a follower of Joachim Patinir
Joerg Breu, The Battle of Pavia, woodcut. c. 1525
Remains of the Porta Pescarina of the Visconti Park, San Genesio ed Uniti, where the Imperial troops entered the Park