W-13-class minesweepers (W-13, W-14), two patrol boats (Patrol Boat No. 1, Patrol Boat No. 2), nine converted sub-chasers (Shonan Maru No. 17, Takunan Maru No. 5, Fukuei Maru No. 15, Kyo Maru No. 2, Kyo Maru No. 11, Koeri Maru, Shonan Maru No. 1, Shonan Maru No. 2, Nagara Maru), two Tsubame-class minelayers (Kamome, Tsubame), and three converted gunboats (Aso Maru, Koso Maru, Nampo Maru). The combat troops quickly secured the existing small airfield outside Basco without resistance, and the air corps troops began expansion work the following day to make it suitable for fighters and reconnaissance aircraft. The same day, the first planes of the Imperial Japanese Army Air Service 24th and IJA 50th Fighter Regiments landed at Basco. However, over the next few days, the success of the Japanese bombing of Clark Field rendered the base at Basco redundant, and work was discontinued. On 10 December, the Batan Island invasion force was withdrawn from Batan Island, and invaded Camiguin Island in the Babuyan Islands to the south. The landing again proceeded without incident, and possession of the small airstrip on Camiguin gave the Japanese a forward airbase only 35 miles from Aparri. They also occupied nearby Calayan Island. Consequences In retrospect, the advance landings in northern Luzon, including at Batan Island and Camiguin, accomplished little of strategic or tactical value. The air fields seized were small, and with the rapid advance of the Japanese into central Luzon, were soon unnecessary for further operations. References Battles and operations of World War II involving the Philippines History of Batanes History of Cagayan Invasions of the Philippines Batan Island 1941 in the Philippines 1941 in military history World War II invasions Amphibious operations of World War II December 1941 events