27 JULY

1645 - Native Muslims attack the Spanish garrison with help from a Dutch squadron that arrives at Jolo from  Batavia (North Jakarta) during the Spanish colonial rule  of the Philippines; the Filipino-Spanish troops under  Commander Esteban Ugalde will resist and finally force  the withdrawal of the squadron after three days of  combat in what would be just one of the few unsuccessful  attempts of the Dutch to expel the Spaniards from the  Philippines; the contexts are Spain's tenous hold on Mindanao and is the so-called 80 Years War of  Netherlands' revolt and, subsequently, assertion of its  independence.

Photo credit: http://www.absoluteastronomy.com/topics/Sulu_Archipelago