btw i entered mindef with my pass degree. its the interview that matters. if you get called for interview of course. but for mindef, they judge you holistically, with PT test and they do look at your resume and testimonial. in short, (not flaming) a arts first class hons person might not be as capable as a engineering pass degree holder. i can confidently say im better than most even with my pass degree. i just didnt like studying. The job might require more critical thinking and hence the PT test. of course, i guess sometimes luck plays a part too, interviewer wise.

be confident in your abilities. know what you can do. you yourself know whats your capabilities as compared to others. dont give up hope!