Cornelisz seized on the news of water on the other island, as his own supply was dwindling and the continued survival of the soldiers threatened his own success. He went with his men to try to defeat the soldiers marooned on West Wallabi Island. However, the trained soldiers were by now much better fed than the mutineers and easily defeated them in several battles, eventually taking Cornelisz hostage. The mutineers who escaped regrouped under soldier Wouter Loos and tried again, this time employing muskets to besiege Hayes' fort and almost defeating the soldiers.