Nog never graduated. During his third year as a Cadet he was granted a field commission as an Ensign, and then a year and a half later when the War ended, he was promoted to Lieutenant.
Even if he never graduated, just for prosperity's sake, he should have finished his coursework? Redundant and unnecessary, or vital and topically of interest?
You can't start a paper in "History of Ice Cream" and just bug out half way through!

