Related Rule
India
Practice Relating to Rule 155. Defence of Superior Orders
The Report on the Practice of India states that, in cases where armed force is used:
The police action or action of the armed forces will be questioned before a court of law. During such proceedings the person charged will not be [held] liable if it is established that he obeyed the superior orders which were lawful. 
Report on the Practice of India, 1997, Chapter 6.8.
However, the report states:
In view of the right and duty to disobey illegal superior orders … it is possible to suggest that the defence of superior orders will not be available in cases where lawfulness of police and military action is challenged as violative of humanitarian standards. The defence will be available only when the superior orders were lawful. 
Report on the Practice of India, 1997, Chapter 6.9.