Dear Aspirsant,

The maximum age to enlist in Indian armed forces i.e. Army,Air force and Navy as an NCO is 21 Years for GD i.e.Ground duty and 23 for clerk in various areas.

Note :- The date of birth accepted by the office is that entered in the Matriculation or an equivalent examination certificate.

Hope this helps to reslove your doubts regarding this.

Have a good future ahead...