The Value of Surprise as a Tactic: Going For Spanish Silver

The opening distinguishes surprise ruined by warning, faulty intelligence, and exaggerated expectations before turning to English attacks on Spanish treasure routes.

Robert Blake leaves part of the Cádiz blockade and races to Tenerife after learning that the Mexico treasure fleet is crossing the Atlantic.

Blake adapts an earlier anti-pirate raid by sending Richard Stayner's frigates against the galleons while heavier ships suppress Tenerife's forts.

The Spanish have already landed the bullion, so Stayner's successful destruction of the harbor squadron cannot achieve the raid's economic purpose.

A historiographical digression tests a radical claim about American recruitment against colonial population totals and traceable regimental records.

Disciplined English gunnery, smoke, and Blake's no-prizes order turn the harbor attack into the destruction of the Spanish squadron.

The English suppress the forts and work their ships out without a loss, but the celebrated victory still fails to capture the treasure fleet.

Blake's final operations also connect Commonwealth sea power to freeing English captives and protecting the southwest coast from Barbary slavers.

Francis Hosier takes a large squadron and detailed route intelligence to Porto Bello in an attempt to control the movement of Spanish bullion.

Porto Bello offers the quickest bullion route but exposes a blockading fleet to delay and yellow fever while Spain can choose longer alternatives.

Ambiguous orders leave Hosier waiting offshore until yellow fever destroys his crews and the 31-million-peso treasure fleet escapes.

Porto Bello's losses illustrate why navies invested early in cleanliness, nutrition, medical observation, and preventive care.

After capturing Trinidad, Ralph Abercromby and Henry Harvey bring a powerful expedition to a fully mobilized San Juan.

Abercromby lands only three thousand troops in daylight, allowing Spanish forces to occupy prepared lines and push the invasion back.

The San Juan failure shows that tactical surprise is fragile against an alert defender; strategic deception creates local superiority by drawing strength elsewhere.

English attacks in 1595 and 1598 and a Dutch attack in 1625 gave Spain ample reason to fortify San Juan, whose position made further attacks predictable.

A night landing might have helped. Better intelligence and roughly twelve thousand troops offered a more plausible basis for taking San Juan.