巴丹島
The Japanese invasion of Batan Island (Filipino: "Paglusob ng mga Hapones sa Isla ng Batan") was the first step in their invasion of the Philippines, an American colony. The purpose was to obtain control of local air strips, which could be used as forward bases by fighter aircraft for operations further south in the Philippines. The attack on Batan Island was the first of several other advance landings; the other landings took place at Aparri, Vigan, Legaspi, Davao, and Jolo Island.