Joseph Spear was an officer of the Royal Navy who served during the American War of Independence, and the French Revolutionary and Napoleonic Wars.

The British invaded and captured the French colony of Martinique between 30 January and 24 February 1809 during the West Indies campaign of 1804–1810 of the Napoleonic Wars. Martinique, like the nearby island of Guadeloupe, was a major threat to Britain's trade in the West Indies, providing a sheltered base from which privateers and French Navy warships could raid British merchant shipping and disrupt the trade routes that maintained the economy of the United Kingdom. Both islands also provided a focus for larger-scale French operations in the region and in the autumn of 1808, following the Spanish alliance with Britain, the Admiralty decided to order a British squadron to neutralise the threat, beginning with Martinique.