Question

Will Dr Sadao be arrested on the charge of harbouring an enemy?

Answer 1

i think no i he will never be 
he should be caught

Answer 2

Dr Sadao, on humanitarian grounds as well as considering it his professional duty, tended a wounded war prisoner which was officially a serious crime.

However, he did not get punished for this offence as it was never revealed to anyone, except his wife, loyal but timid servants, and a General who was too self-obsessed with his own treatment that he would never let the doctor leave him.