You have to appear in National Defence Academy NDA Exam to join Indian Army.

The Union Public Service Commission UPSC conducts National Defence Academy NDA Exam for admission to the Army, Navy and Air Force wings of the NDA and for Indian Naval Academy Course (INAC).

NDA Eligibility Criteria

For Army wing of NDA-
You should have passed class 12th examination.

For Air Force and Naval Wings of NDA and for the 10+2 Cadet Entry Scheme at the Indian Naval Academy:
You should have passed class 12th examination with Physics and Mathematics.

Age Limits,-

Only unmarried male candidates born between 2nd July, 1998 and 1st July, 2001 are eligible.

UPSC NDA / NA 2017 Exam Important Dates for

NDA/NA (I)

Date of Notification: 18 January, 2017
Last Date to Apply: 10 February, 2017
Date of Exam: 23 April, 2017

NDA/NA (II)

Date of Notification: 7 June, 2017
Last Date to Apply: 30 June, 2017
Date of Exam: 10 September, 2017