Respuesta :
To show their loyalty. They did not want everyone to think all Japanese were the same, nor have the same beliefs.
The correct answer is: To show their loyalty to the US. For understanding why it is important to understand the behaviour that different Nations develop forward people from the country they are in war against. For instance, when the US was in war against Germany, many Germans were captured to avoid that these were in-pro their cointry objectives and acted against the US. So that, in the case of Japanese people, these had only two options: to join US milatary and to show they were loyal to the country, or to be "captured" to be kept and avoid possible attacks.