Ottoman–Venetian wars in the context of "Lefkada"

A series of military conflicts between the Ottoman Empire and various European states took place from the Late Middle Ages up through the early 20th century. The earliest conflicts began during the Byzantine–Ottoman wars, waged in Anatolia in the late 13th century before entering Europe in the mid-14th century with the Bulgarian–Ottoman wars. The mid-15th century saw the Serbian–Ottoman wars and the Albanian-Ottoman wars. Much of this period was characterized by the Ottoman expansion into the Balkans. The Ottoman Empire made further inroads into Central Europe in the 15th and 16th centuries, culminating in the peak of Ottoman territorial claims in Europe.

The Ottoman–Venetian wars spanned four centuries, starting in 1423 and lasting until 1718. This period witnessed the fall of Negroponte in 1470, the siege of Malta in 1565, the fall of Famagusta (Cyprus) in 1571, the defeat of the Ottoman fleet at the Battle of Lepanto in 1571 (at that time the largest naval battle in history), the fall of Candia (Crete) in 1669, the Venetian reconquest of Morea (Peloponnese) in the 1680s and its loss again in 1715. The island of Venetian-ruled Corfu remained the only Greek island not conquered by the Ottomans.

The Third Ottoman Venetian War (1537–1540) was one of the Ottoman–Venetian wars which took place during the 16th century. The war arose out of the Franco-Ottoman alliance between Francis I of France and Süleyman I of the Ottoman Empire against the Holy Roman Emperor Charles V. The initial plan between the two had been to jointly invade Italy, Francis through Lombardy in the North and Süleyman through Apulia to the South. However, the proposed invasion failed to take place.

A galleass was a warship of the Renaissance that combined the sails and armament of a galleon or carrack with the propulsion and maneuverability of the oared galley. While never quite matching up to the full expectations for its design, the galleass was widely employed by the navies of the Republic of Venice and the Spanish Empire during the 16th and 17th centuries.

Distinct types of galleasses were developed concurrently under vastly different needs. Mediterranean galleasses were invented by Venice during the Ottoman–Venetian wars with the aim to overpower galley fleets, a model also adopted by Spain and other nations after their notable role in the Battle of Lepanto. In comparison, Atlantic galleasses were designed by Spain to outmaneuver sailing ships and protect their treasure fleets, eventually evolving into rowless galleons and frigates.