When
Spain entered the
American Revolutionary War in June 1779, both
Great Britain and Spain had been planning for the possibility of hostilities for some time. King
Carlos III set the defence of the
Captaincy General of Guatemala as one of his highest priorities in the
Americas, after the conquest of British
West Florida. The British sought to gain control over Spanish colonies in
Central America, and their first target was
San Fernando de Omoa, a fortress that
Matías de Gálvez, the
Captain General of Guatemala, called "the key and outer wall of the kingdom". However, the Spanish struck first. In September the
capture of Cayo Cocina gave them possession of the British settlement at
St. George's Caye (off the coast near present-day
Belize City). Then, anticipating a British attack against the nearby port of
Santo Tomás de Castilla, Gálvez withdrew the garrison there to
Omoa.
British forces The decision by Gálvez to withdraw to Omoa upset British plans.
Commodore John Luttrell, in command of three ships and 250 men, had intended an attack on the Santo Tómas, but his force was inadequate for an attack on Omoa. Even when he and Captain William Dalrymple arrived at Omoa on the 25 September with 500 men, they were forced to retreat after a brief exchange of cannon fire. The British returned with a force of more than 1,200 men and twelve ships in early October. ==Battle==