The fourth and final colonial war of the 18th century was the French and Indian War (1754–1763). The British sought to neutralize any potential military threat and to interrupt the vital supply lines to Louisbourg by deporting the Acadians. The British began the Expulsion of the Acadians with the Bay of Fundy Campaign (1755). During the next nine years, over 12,000 Acadians were removed from Nova Scotia. In the maritime theatre, conflicts included: Battle of Fort Beauséjour; Bay of Fundy Campaign (1755); the Battle of Petitcodiac; the Raid on Lunenburg (1756); the Louisbourg Expedition (1757); Battle of Bloody Creek (1757); Siege of Louisbourg (1758), Petitcodiac River Campaign, Gulf of St. Lawrence Campaign (1758), St. John River Campaign, and Battle of Restigouche.