The Battle of Lepanto was a naval engagement that took place on 7 October 1571 when a fleet of the Holy League, a coalition of Catholic states arranged by Pope Pius V (comprising Spain and its Italian territories, several independent Italian states, and the Sovereign Military Order of Malta), inflicted a major defeat on the fleet of the Ottoman Empire in the Gulf of Patras. The Ottoman forces were sailing westward from their naval station in Lepanto (the Venetian name of ancient Naupactus – Greek , Turkish ) when they met the fleet of the Holy League which was sailing east from Messina, Sicily.
The fleet of the Holy League consisted of 109 galleys and 6 galleasses from the Republic of Venice, 49 galleys from the Spanish Empire, 27 galleys from the Republic of Genoa, 7 galleys from the Papal States, 5 galleys from the Order of Saint Stephen and the Grand Duchy of Tuscany, 3 galleys from the Duchy of Savoy, 3 galleys from the Knights of Malta and some private ships. Don John of Austria, half-brother of Philip II of Spain, was named by Pope Pius V as overall commander of the fleet and led the centre division along with the Papal captain Marcantonio Colonna and the Venetian Sebastiano Venier; the wings were commanded by the Venetian Agostino Barbarigo and the Genoese Gianandrea Doria. The Ottoman fleet consisted of 222 galleys and 56 galliots and was led by Müezzinzade Ali Pasha, Mahomet Sirocco and Occhiali.
In the history of naval warfare, Lepanto marks the last major engagement in the Western world to be fought almost entirely between rowing vessels, namely the galleys and galleasses which were the direct descendants of ancient trireme warships. The battle was in essence an "infantry battle on floating platforms". It was the largest naval battle in Western history since classical antiquity, involving more than 400 warships. Over the following decades, the increasing importance of the galleon and the line of battle tactic would displace the galley as the major warship of its era, marking the beginning of the "Age of Sail".
The victory of the Holy League is of great importance in the history of Europe and of the Ottoman Empire, marking the turning-point of Ottoman military expansion into the Mediterranean, although the Ottoman wars in Europe would continue for another century. It has long been compared to the Battle of Salamis, both for tactical parallels and for its crucial importance in the defense of Europe against imperial expansion. It was also of great symbolic importance in a period when Europe was torn by its own wars of religion following the Protestant Reformation. Pope Pius V instituted the feast of Our Lady of Victory, and Philip II of Spain used the victory to strengthen his position as the "Most Catholic King" and defender of Christendom against Muslim incursion. Historian Paul K. Davis writes that
More than a military victory, Lepanto was a moral one. For decades, the Ottoman Turks had terrified Europe, and the victories of Suleiman the Magnificent caused Christian Europe serious concern. The defeat at Lepanto further exemplified the rapid deterioration of Ottoman might under Selim II, and Christians rejoiced at this setback for the Ottomans. The mystique of Ottoman power was tarnished significantly by this battle, and Christian Europe was heartened.
Background
The Christian coalition had been promoted by Pope Pius V to rescue the Venetian colony of Famagusta on the island of Cyprus, which was being besieged by the Turks in early 1571 subsequent to the fall of Nicosia and other Venetian possessions in Cyprus in the course of 1570. On 1 August the Venetians had surrendered after being reassured that they could leave Cyprus freely. However, the Ottoman commander, Lala Kara Mustafa Pasha, who had lost some 50,000 men in the siege, broke his word, imprisoning the Venetians, and having Marco Antonio Bragadin flayed alive.
The members of the Holy League were the Republic of Venice, the Spanish Empire (including the Kingdom of Naples, the Habsburg monarchy, the Kingdoms of Sicily and Sardinia as part of the Spanish possessions), the Papal States, the Republic of Genoa, the Duchies of Savoy, Urbino and Tuscany, the Knights Hospitaller, and others.
The banner for the fleet, blessed by the Pope, reached the Kingdom of Naples (then ruled by Philip II of Spain) on 14 August 1571, where it was solemnly consigned to John of Austria.