Which test to give to enter in Indian army ? Please tell the dates too

If you are In class 12th Then I would recommend You to appear for NDA exam, to become Officer in the Indian Army. NDA is organized twice a year first in the Month of April and other in the Month of September.

Notification for NDA April 2019 will be available in the Month of January. NDA is conducted by UPSC, a constitutional body. The exam consists of two phases first is written test and second is the SSB interview. The written test consists of two parts one is the General ability and other is Mathematics. To apply we request you to visit the following link to get information regarding Question paper future exam notification and cut-offs.

http://www.upsc.gov.in/

This is not the only way to Join Indian army

Hierarchy in Indian Army consists of three level top one is commisioned officer who can go up to Field Marshal on Promotion, Next comes Junior commissioned officer and next comes soldiers.

Based Upon Your qualification You can apply to various trades of Army

You can visit the following site to Check Your eligibility for the Different post as we don't know your qualification so it's Not worth here to mention all posts because you may not be eligible for all of them.

http://www.joinindianarmy.nic.in/index.htm