 Issues regarding the current historical outlook on the war exist.For example, the Japanese government has been accused of historical revisionism by allowing the approval of a few school textbooks omitting or glossing over Japan's militant past, although the most recent controversial book, the "New History Textbook" was used by only 0.039% of junior high schools in Japan and despite the efforts of the Japanese nationalist textbook reformers, by the late 1990s the most common Japanese schoolbooks contained references to, for instance, the Nanjing Massacre, Unit 731, and the comfort women of World War II, all historical issues which have faced challenges from ultranationalists in the past.Taiwan and the Penghu islands were put under the administrative control of the Republic of China (ROC) government in 1945 by the United Nations Relief and Rehabilitation Administration.