Hey Sanchita.
Here is a list of various government institutes that offer the course of BA in defence and Strategic studies. The mode of admission to each course is different there is no combined entrance test, you can look at the official websites of each university for details.
North Maharashtra University
Punjabi University, Patiala
Rajasthan Maharaja Ganga Singh University
Thiruvalluvar University
Bharathiar University
University Of Allahabad
Chatrapati Sahuji Maharaj Kanpur University
Mahatma Gandhi Kashi Vidyapeeth
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile