Hi Suman,

One can fulfill his dream of joining officer cadre of Indian armed forces after 12th , one can join army, airforce and navy after completing 10+2 by various entries, but there are certain eligibility criteria which is to be fulfilled. Below is a detailed view of how one can join India armed forces after 12th.

NAVY
There are two ways of joining Indian Navy after 12th:


1.  NDA & NA Examination :  You can join NA by taking the exam conducted by Union Public Service Commission (UPSC). This exam is conducted twice a year in all major cities throughout India.
Eligibility Criteria
Age  16  to 19 years(at the time of commencement of course)
Nationality  Indian
Gender   Men only
Educational Qualifications  10+2 with Physics and Mathematics. Appearing final year students can also eligible to apply.
Advertisement Schedule   May and December. (Advertisement is released by UPSC. Visit www.upsc.gov.in)

2. 10+2 B.tech Cadet Entry:
Age: 17 to 19 years .
Educational Qualification: Passed Senior Secondary Examination (10+2 Pattern) or its equivalent from University/Board with at least 70 % aggregate marks in Physics, Chemistry and Mathematics (PCM) and at least 50% marks in English (either in Class X or Class XII).
How to apply: One can directly apply online from nausenabharti.nic.in , selection for SSB Interview based on the cut off percentage decided by Indian Navy.