The term WAR FLEET can be summarized as an ARMADA, which is a large fleet of warships. Armadas have been used throughout history to protect and defend a country's coastline or to launch an attack on another country. Armadas were especially important during the Age of Sail, when naval warfare was a major part of warfare. Armadas were also used in World War I and World War II, when they were used to transport troops and supplies across the seas.