Maritime history of England Instructions were issued in 1653 and Sailing Instructions in 1673. During the Hundred Years' War (1337–1453) the French fleet was initially stronger than that of the English, but the former was almost completely destroyed at the Battle of Sluys in 1340. Many other sea battles were fought in this period. The Spanish Armada was the Spanish fleet that sailed against England under the command of Alonso de Guzmán El Bueno, 7th Duke of Medina Sidonia in 1588. It was sent by King Philip II of Spain to take the Duke of Parma's army from the Spanish Netherlands to a landing
3rd Spanish Armada the religious war in France in support of the Catholic League, meant that the Spanish had established coastal garrisons along the French and Flemish coast by the 1580s. These bases had a huge strategic value because they allowed England to be threatened by the Spanish fleet and troops. Meanwhile, England also intervened in France, but in support of King Henry IV of France, by the Treaty of Greenwich. The Spaniards had captured Calais in 1596 which meant that an invasion of England could be more achievable. As a result, after desperate French demands to keep her from signing peace with