I admire you very much, and I agree with your ambition of liking the military and wanting to enter a military school. But, by the way, is this also your family's wish? When you join the army, you will embark on a completely different system from society. You and your family should be prepared. National University of Defense Technology is good in military school. I don't know his major. I know nothing about the army. You should ask about the relationship with the army.
If you are not determined to spend your life in the military system, you should still be Shanghai Jiaotong University. Jiaotong University is strong in mechanical design, vehicle engineering, computer and all kinds of mechanics.