Which field of engineering should I opt to go for army further as graduation is important for girls to join the army?

Hello Khushbu, It's very nice to know about your dream of joining Indian Army. Yes, you must be a graduate to get commissioned in the Indian Army. Electrical, ECE, CSE, Mechanical Engineering, etc. I am attaching a link that will give you all the required information. Link: http://joinindianarmy.