This is a supplement of A Walk Through War Memories in Southeast Asia published in 2007 (Iwanami Shoten in Japanese) and 2010 (Metro Manila: New Day Publishers in English).
I conducted a field-research at war memorials, museums, and war cemeteries in Manila and Dumaguete in the Philippines in July 2016 and in Hong Kong in February 2017. The National Historical Institute erected 10 or more historical markers every year, not only in Manila but also in rural area. Many of them mention on Japanese occupation in the Philippines in 1942-45. Hong Kong is not included in Southeast Asia usually, but there are same war monuments and cemeteries with Singapore because of a British colony. The Japanese occupation in Hong Kong on 25 December 1941 is important as a pre-history of Japanese occupation in Singapore on 15 February 1942. These war monuments and cemeteries were originally constructed by British after World War I. It is important to consider the continuity from World War I to World War II.