Hello Buddy! Hope you're doing good.

There is no defence/army quota in JEE exam for getting a seat in either NIT or IIT. You have to study well, then score good for having a seat in any NIT or IIT. For knowing about the possibility of getting a seat in NIT or IIT, just go through the previous cutoff trend, the institute's opening and closing rank and accordingly do your preparation. Hope this will help you.

ALL THE BEST! WORK HARD !!