With Napoleon's inability to send the requested massive reinforcements after the outbreak of war on 18 May 1803 with the British, the Royal Navy immediately despatched a squadron under Sir John Duckworth from Jamaica to cruise in the region, seeking to eliminate communication between the French outposts and to capture or destroy the French warships based in the colony. The Blockade of Saint-Domingue not only cut the French forces out from reinforcements and supplies from France, but also meant that the British began to supply arms to the Haitians.