To axe,

Due to the plus points regarding air engineering officer, most with a good honors engineering degree would of course choose aeo rather than chiong up a mountain. Usually being rejected without any interviews is that they receive quite some applications and eliminate some by looking at academic results first.

As for saf, land and combat, because no one really wants to sign on unless no choice, any degree in any field will have a chance to go for interview. That one is look at whether you can make it as an officer.

This is like good MNCs companies hiring fresh graduates, those who get a chance to go for interviews are 2nd upper and above, as there are many of them and they can choose from among them.