This study aims at considering how Japan educated Chosun children History subject during the wartime period and how they trained Chosun children to be Japanese loyal subjects through distorted history education. Also, this study aims at finding out how Japan tried to rationalize the distorted view of history and considering the justification they focused on obtaining via history education. As a result of reviewing contents associated with Chosun in the textbook published at that time, the main reason of not until the end of Japanese occupation did Japan selected the history education as the advanced course is that Japan did not trust Chosun people until the moment of defeat even though they actively mobilize Chosun people for conscription since 1930s. Therefore, it was vital for Japan to inculcate the concept of history and justification without anti Japanese sentiment in Chosun people via the distorted history education in consequence of which Chosun people holding guns did not aim the guns at the Japanese. This in turn means that Japan needed to brainwash Chosun children with the distorted traditional history of Chosun by any means for training Japanese loyal subjects.