The Korean War began when North Korean People's Army forces attacked south in June 1950. As the fighting progressed, temporary military cemeteries for battle casualties were established by United Nations forces near the towns of Taejon (July 9, 1950), Kwan-ui (Kwan-ni), Kum-chon, and Sindong. When the North Korean forces pushed towards Busan, these cemeteries had to be abandoned. Later, as the Battle of Pusan Perimeter developed, temporary cemeteries were established at Masan, Miryang, and Taegu, with a Busan cemetery being established on July 11, 1950. As the fighting pushed into North Korea, temporary cemeteries were established in or near the towns of Kaesong, Sukehon, Wonsan, Pupchong (Pukchong County), Yudarn-ni and Koto-ri. Some eleven division-level cemeteries were established in the first two months of fighting and later five UN military cemeteries were established in North Korea.