One of the most famous concentration camps operated by the Japanese during World War II was at the University of Santo Tomas in Manila, the Philippines, the Santo Tomas Internment Camp.uring the Japanese occupation, the grounds of the prison were used as part of Stanley Internment Camp. Nearly 600 prisoners of war and civilians, killed by the Japanese during the occupation, are buried in the nearby Stanley War Cemetery (which is NOT part of the prison itself but adjacent to it).