 Again on 17 March 1630, a large Spanish force of 2,500 soldiers attacked Jolo but to no avail.When its commander Lorenzo de Olazo was wounded, the Spaniards retreated.On 4 January 1638, de Corcuera led a naval and military expedition of about 80 ships and 2,000 troops to attack Jolo, but Sultan Wasit put up stiff resistance.