What is the difference between experience and grade?
Grade in Starship Troopers is the equivalent of experience level in a fantasy RPG. A unit must earn a certain amount of experience before they can go up a grade. Grade allows you to compare at a glance the relative strengths of two units of the same rank. Experience, then, is a raw tally of in-combat experience, earned through killing bugs and bugholes, and by completing mission objectives. 2.