This is an interesting reenactment film - the blurb says:
'In 1797 Sir Ralph Abercrombie led more than seven thousand British forces in an attempt to gain control of one the Spanish Empires key outposts in the New World; Puerto Rico. What the British failed to realize was the strength and conviction of a smaller band of men made up of Spanish soldiers, members of the Puerto Rican Fixed Regiment, local militia and citizens. This small band of men stood their ground with the help of the impregnable fortifications of El Morro Fort and San Cristobal Fort and defeated the much larger British forces. This battle became known as the 1797 Battle of San Juan'.