The military remains have a social and historic value in holding up a true mirror to modern history of war and suffering, and will be used for historic place in Korea. This study is to research these modern military remains as cultural properties in Korea. They are classified with three types, namely military sites, installations of civil structures and buildings. The military remains have the historic sites of the righteous army and Korean war, and most of them are battle fields located in a mountainous area rather than urban area. There are fortresses, bridges and tunnels, and watchtowers of civil structures. The fortresses were constructed with Japanese military installations in the end of the Pacific War, and are most located in Sangmo-ri, Daejeong-eup, Seogwipo-si, Jeju-do, Korea. The bridges were to be destroyed and constructed during the war, and the watchtowers as military defence were to be constructed in inland area. There are arsenals, barracks, and headquarters of buildings. The weapon factory of Gigiguk (arsenal bureau) constructed in the late 19th century are present, and also the army training center, barracks, and church, etc are in Seogwipo-si, Jeju-do, Korea. There are old headquarters constructed in 1910s at Jinhae Gyeongnam, and buildings to testify about the horrors of the Korean war around Cheorwon, Gangwon.