The first action of the period was the 1816 bombardment of Algiers by a joint Anglo-Dutch fleet under Lord Exmouth, to force the Barbary state of Algiers to free Christian slaves and to halt the practice of enslaving Europeans. During the Greek War of Independence, at the Battle of Navarino in 1827, the Turkish fleet was destroyed by the combined fleets of Britain, France and Russia. This was the last major action between fleets of sailing ships. Ottoman involvement continued, with the bombardment of Acre in 1840, and additional Mediterranean crises during the rest of the decade.