Nanjing Massacre
In 2010, a Japanese woman named Tamaki Matsuoka made a documentary film about the Nanjing Massacre.  In the film, former IJA soldiers admit that they often raped Chinese women and massacred Chinese civilians.  However, out of the 250 former soldiers that Matsuoka interviewed, only three felt bad about what they had done.  One former solder, Sho Mitani, said: