Description (Luzon Campaign 15 December 1944 to 4 July 1945) After Leyte came Mindoro, which was invaded on 15 December 1944, an air strip being obtained to provide a base for operations during the invasion on Luzon. American troops landed on the shores of Lingayen Gulf on g January 1945 and pushed to Manila, which the Japanese defended vigorously until 24 February. Rather than meet the Americans in a decisive battle, the Japanese decided to fight delaying actions in numerous places. Organized resistance ended in southern Luzon in April and in central and northern Luzon in June.