Key Facts
- Date of assault
- June 15, 1598
- English ships
- 20
- English troops
- 1,700 men
- Days held
- 65 days
- English commander
- Sir George Clifford, Earl of Cumberland
Strategic Narrative Overview
On June 15, 1598, Cumberland's fleet of 20 ships carrying 1,700 men approached San Juan and overwhelmed the Spanish defenders at the fortress of Castillo San Felipe del Morro. The castle fell, giving England control of the city. English forces occupied San Juan for 65 days, but an outbreak of disease, likely dysentery, steadily reduced the fighting strength of the occupying force and made a sustained occupation untenable.
01 / The Origins
In the late 16th century, England and Spain were engaged in sustained maritime rivalry across the Atlantic. Spain's Caribbean possessions, including Puerto Rico, were valuable colonial assets. English privateers and naval commanders sought to seize or disrupt these holdings. The Earl of Cumberland mounted an expedition in 1598 to capture San Juan, aiming to establish an English foothold and strike a blow against Spanish imperial power in the Americas.
03 / The Outcome
Unable to maintain their hold due to disease casualties, the English forces abandoned San Juan after 65 days. Before departing, they sacked and burned the city. The Spanish subsequently reoccupied the island. England gained no lasting territorial foothold, and control of Puerto Rico returned to Spain. The episode nonetheless marked the only time El Morro's defenses were successfully breached in the colonial era.
Belligerents & Mobilization Analysis
Side A
1 belligerent
Sir George Clifford, Earl of Cumberland.
Side B
1 belligerent
Kinetic Engagement Axis
Scroll horizontally to view full axis. Events plotted relatively.