|Battle of Rio Nuevo|
|Part of the Anglo-Spanish War (1654-1660)|
|Commanders and leaders|
|Governor Cristóbal Arnaldo Isasi||Governor Edward D'Oyley|
50 Spanish guerrillas
700 soldiers & militia|
|Casualties and losses|
300 killed or wounded|
4 ships captured
The Battle of Rio Nuevo took place between 25 and 27 June 1658 on the island of Jamaica between Spanish forces under Cristóbal Arnaldo Isasi and English forces under governor Edward D'Oyley. In the battle lasting over two days the invading Spanish were routed. It is the largest battle to be fought on Jamaica.
In 1655, an English force led by Admiral Sir William Penn, and General Robert Venables seized the island, and successfully held it against two Spanish attempts to retake it. The former Spanish governor of Jamaica, Don Cristóbal Arnaldo Isasi, attempted to recapture the island with forces from Cuba in the summer of 1657, but the attack was repulsed by acting governor Colonel Edward D'Oyley.
On 20 May 1658, Isasi attempted another invasion with more men recruited from New Spain; the Tercios Mexicano (Mexican Regiment). Isasi also had at his disposal four troop transports and a number of armed ships. In total the invasion force consisted of 31 captains, 31 ensigns, 28 sergeants and 467 soldiers. While this force anchored for two days near the mouth of Rio Nuevo, three English coast guard vessels chanced upon the Spanish but were chased away by gunfire. The English scouts however reported back to D'Oyley who mustered all available militia and soldiers who were fit to fight. The Spanish in the meantime fortified their camp and were joined by around 50 tattered Spanish guerrillas.
On 25 June, D'Oyley mustered a total of 700 soldiers and militia and ten ships to transport them. The English troops disembarked near the Rio Nuevo. The English then captured the Spanish transports, sealing off any escape for the invaders. The Spanish, seeing this, attempted to make a stand behind their newly fortified redoubt. The English declined to come to grips and fired on the Spanish position with cannon and muskets for two days. Their superior firepower had a devastating effect, and when the surviving Spanish attempted to break out, most were killed or captured. What was left of the invasion force fled into the hills and jungle. They had lost over 300 dead and wounded, mostly killed, and 150 prisoners, as well as eleven flags, six guns, and most of their arms and ammunition. English casualties numbered around sixty. Most of the wounded on both sides did not survive, due to tropical diseases.
The victorious English conveyed the Spanish artillery back to 'The Point' and to Fort Cromwell, installing it into their defences. Isasi tried to keep the struggle up until he was finally defeated in 1660, finally having to escape from what is now the area of the Tower Isle resort and flee to Cuba by canoe with his remaining supporters. In order to dissuade further Spanish attempts to retake Jamaica, the English under Christopher Myngs launched attacks on Spanish ports such as Santa Marta and Tolu, forcing the Spanish to the defensive.