Eyes of the Emperor, by Graham Salisbury, 2005

Pop is furious when he learns Eddy Okubo lied about his age to enlist early in the Army. But when the Japanese bomb Pearl Harbor, both Pop and Eddy see his service as a chance for honor, to show that though they have "the eyes of the emperor," they are loyal Americans. But what America asks of its soldiers of Japanese descent is only a cause for shame. Exemplary historical fiction, written with authenticity, dignity, and compassion. Strongly recommended.