By the end of May , the whole of central and southern Luzon , except Manila , was practically in Filipino hands .
Revolutionary leaders promptly stepped up their raids and ambuscades on Spanish garrisons in Central Luzon , capturing more than 5,000 prisoners .
By the end of May , the whole of central and southern Central Luzon , except Manila , was practically in Filipino hands .
Revolutionary leaders promptly stepped up their raids and ambuscades on Spanish garrisons in Central Luzon , capturing more than 5,000 prisoners .