Hello Arjun,
To become a military doctor it is neccesary to have a bachelor's degree. For the role of doctor in Indian Armed Forces, you are required to appear in NEET examination and apply for admission on Armed Forces Medical College. You can opt for an MBBA course there to become a doctor.
Hope it helps.
Good Luck!
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile