NCC holder surely will have benefits in defense field.
if the cadets posses NCC passed certificate claiming grade minimum of "c" then yes he/she can try for NCC special entry
NCC special entry are meant for NCC CADETS ,without facing the entrance exam.
you might be knowing NCC cadets will have separate merit list from others.then why not to avail this opportunity.right
if not,you can even go with with the entrance exam through upsc entry.
upsc conduct exams like NDA (national defense academy),CDS (combined defense service )exam
you can defense field via CDS OR NDA EXAM AS PER YOUR ELIGIBILITY CRITERIA AND QUALIFICATION
*indian army
*indian air force
*indian navy