As you want to get the details of process to become Officer in Indian Army so here is the information of the same for you:

To become an officer in Indian Army, there are many entries through which you can become an officer. They are as follows:-

NDA:-if you want to become an officer after 12th &you want to join Infantry.
Then you can give written exam of NDA &then SSB &then MEDICAL.

TES (Technical entry Scheme):-this is another way to join Indian Army as a officer after 12th.for this you must have more than 80%in 12th &pcm as compulsory subjects.

In this you don’t have to give written exam, you would face SSB directly& then medical. In this MERIT LIST are made on the basis of 12th marks.

CDS:-through this entry you can become an officer in Indian Army in pre final & final year. For this you have to give written, SSB & medical.

UES:-you can become officer through it