What is the theme in The Rape of Nanking by Iris Chang?

Another theme involves the atrocities of war. One of the main themes within the story is the absolutely horrific atrocities of war that can occur when military actions continue without a check and balance system. In the case of the Japanese invasion of China, entire areas were slaughtered at will, without any care for the treatment of other human beings. Villages were burned to the ground, families were murdered, hundreds of thousands raped and mutilated, and yet the Japanese soldiers appeared to have no remorse for their actions.