You do realize that in case of any war between Bangladesh and India, it won't be a conventional one? Everyone is well aware of India's superiority against Bangladesh. There won't be any large scale head to head tank battle, nor will there be dog fights in the air. India will dominate the airspace and invade land within 24-48 hours.
If there is ever a war, it will be a war of attrition. Bangladesh army and civilians will immediately resort to guerilla warfare and insurgency against the occupying Indian force. Good luck fighting with 170 million people.