Hello,

You should clear 12 th standard then only you can join in army by giving exams like NDA & NA Examination which are open twice a year and Technical Entry Scheme (For High School Science Graduates) which is open twice a year. Candidates should be between 16 ½ to 19 ½ years can join in Indian Army.

For more information go through below mentioned link.

https://news.careers360.com/indian-army-recruitment-2020-apply-for-soldier-posts-joinindianarmynicin/amp

Hope this helps you.

Good Luck!!