Each year, a committee is convened to make selections for the next release of Contrails. It is not the type of publication that remains the same from year to year. While enticing to get ahead, you also do not want to be the star student who seems to just know things when classmates are struggling.
Imagine being in an 8' wide hallway turned inward and asked to "assume the position" (front leaning rest -- aka push up position). Then, there are 25 of you all preparing to push for an indeterminate amount of time. A voice from above yells out "UNIFORM OF MY COUNTRY QUOTE - GO" and you casually begin to recite "Sir, the uniform of my country quote by Captain Karen Dorman Kimmel is as follows.... Without a word, this uni --" It is just then that you realize, you are the only one of the 25 reciting the quote.... All eyes aim at you. The cadre volume intensifies. Your force field is worn down by the laser death ray eyes of your classmates who just received the book the night before but could not dedicate time to studying this week's assignments because they were learning to shine shoes and fold clothes. You just became enemy number 1 and have a neon sign on your chest that says DOES NOT PLAY WELL WITH OTHERS.
It is a book and it contains many things. There are military ranks, facts about planes, quotes, and much more. Be careful with quotes because they are often extracts and selected portions of larger works. Studying the full version of quotes today could prove harmful when you are only asked to know a subset.
If I am you, and I am wanting to do some advance work - study the ranks of the military branches. You need to know the name, the order, and what the rank looks like for visual recall. That will not change and you will be expected to know the entire library -- not a subset.