In addition, as data from the archaeological excavations of the 3rd Fine Arts in Phra Nakhon Si Auttaya province around Khao Din Niaw in Chulachomklao Royal Military Academy area on October 9th to 11th and 14th to 22nd, 2008. Initially assumed that the excavated areas such as bunkers or trench of Japanese military during World War II that located on the ridge of Khao Din Niaw in Chulachomklao Royal Military Academy southeastward of Khao Cha Ngok. There found all evidences thirteen pieces by almost all items such as several equipment and others that can be divided into four groups according to the material is metal, glass, stone and plastic.