Question

sadao was not sure of the generals survival why ?​

Answer 1

Answer:

Dr. Sadao felt that the General was in the palm of his hand i.e. his control because he was indispensable for the General's well-being and survival. The General did not trust any other doctor. He knew, that if he is arrested and tried for saving and sheltering an enemy sailor, the General will in his own interest, see to it that no harm comes to Dr.Sadao.